Two  ultraportable Thinkpad models popular demand....

The ThinkPad X machines are smaller versions of the bigger ThinkPads found in corporate offices around the world.  Few brands have as firmly established a brand identity as the Lenovo ThinkPad (and the IBM ThinkPad before that). The iconic look and feel of these systems have changed in only subtle ways over the years, maintaining a road-tested list of features, as well as the beloved  solid, legendary keyboards.

                     Thinkpad x120e  superlight with long battery life 

The ThinkPad X120e defines what an affordable business ultraportable should be. Weighing in at 2.9 pounds,  11.6″ antiglare display, up to 6.6 hours of battery life and slim form factor.  The ThinkPad X120e features AMD’s Fusion E series APU, which means this can playback HD video and comfortably handle common business applications.  HD video can be presented  via a built-in HDMI port.  It has an award winning keyboard and dual pointing devices as well as a full complement of ports.

        Thinkpad x201          A Real powerhouse with docking station

The Lenovo Thinkpad X201 is a device for professional users    The X201 has a surprisingly large keyboard, as well as a 12-inch display and an Intel Core i5 processor.  It's about as powerful an ultraportable package as you're likely to find,  Anyone looking for the power of a midsize laptop in a compact 12-inch body has only a few choices, and none tops Lenovo's excellent ThinkPad X201.   The 12.1-inch wide-screen LCD display offers a 1,280x800-pixel native resolution, which is standard for many 13- and 14-inch laptops (12-inch models themselves are a relative rarity).   One of the best reasons for a user to consider a system like this is Lenovo's matte displays--a nice change of pace from the overly glossy screens of consumer grade machines.
Just like the larger T-series counterpart, the X201 retains the strong stainless-steel screen hinges, durable ThinkPad keyboard, strong plastic cladding, and alloy chassis.  For a 12-inch notebook the X201 can easily be tossed around with little worry....Try to do the same thing with cheaper consumer machines and you won’t like the results.

x201 Ultra-Doc

Why would anyone get a docking port?
Well, for one, with Win 7 it likes to create new devices in every USB port you plug a device into. A docking station can manage your USB connections while you just take the laptop with you, when you get back you snap it together and you have all your USB devices at once, while you recharge. This could be any external drive types, printers, speaker systems and external displays that you wish to use. It can be best thought of as a cable management system for when you return to your desk or room, that you can attach in 1 second.  The speakers in the base unit are better than those in the laptop, and have enhanced bass.The whole unit gives an additional rear elevation to the unit which can make it more comfortable to type on.  You can add a battery pack to the internal Ultrabay, a hard drive, several kinds of optical RW (including BlueRay. There is a port to charge a second laptop battery as well as connections for your gigabit eithernet, headphones, microphone and 4 more USB ports.

         Both x120e and x201's available with various size Solid State Drives  (SSD's)

Difference between HDD and SSD Explained
The traditional spinning hard drive (HDD) is the basic nonvolatile storage on a computer. That is, it doesn't "go away" like the data on the system memory when you turn the system off. Hard drives are essentially metal platters with a magnetic coating. That coating stores your data, whether that data consists of weather reports from the last century, a high-definition copy of the Star Wars trilogy, or your digital music collection. A read/write head on an arm accesses the data while the platters are spinning in a hard drive enclosure.
An SSD does much the same job functionally (e.g., saving your data while the system is off, booting your system, etc.) as an HDD, but instead of a magnetic coating on top of platters, the data is stored on interconnected flash memory chips that retain the data even when there's no power present.  These flash memory chips differ from the flash memory in USB thumb drives in the type and speed of the memory.   Suffice it to say that the flash memory in SSDs is faster and more reliable than the flash memory in USB thumb drives. SSDs are consequently more expensive than USB thumb drives for the same capacities.

Speed: This is where SSDs shine. An SSD-equipped PC will boot in seconds, certainly under a minute. A hard drive requires time to speed up to operating specs, and will continue to be slower than an SSD during normal use. A PC with an SSD boots faster, launches apps faster, and has faster overall performance. Whether it's for fun, school, or business, the extra speed may be the difference between finishing on time or failing.

Fragmentation: Because of their rotary recording surfaces, HDD surfaces work best with larger files that are laid down in contiguous blocks. That way, the drive head can start and end its read in one continuous motion. When hard drives start to fill up, large files can become scattered around the disk platter, which is otherwise known as fragmentation. While read/write algorithms have improved to the point that the effect is minimized, the fact of the matter is that HDDs can become fragmented, while SSDs don't care where the data is stored on its chips, since there's no physical read head. Thus, SSDs are inherently faster.

Durability: An SSD has no moving parts, so it is more likely to keep your data safe in the event that you drop your laptop bag or your system is shaken about by an earthquake while it's operating. Most hard drives park their read/write heads when the system is off, but they are flying over the drive platter at hundreds of miles an hour when they are in operation. Besides, even parking brakes have limits. If you're rough on your equipment, an SSD is recommended.