Recs.
Updated
Specs
Pros
Pro Dual-batteries, long rundown time
There are two batteries on-board the ThinkPad X260. One is embedded in the laptop, and the other is removable (so you can hot-swap it out if need be without needing to turn the computer off first). NoteBookCheck only had the i5 model on-hand to test, and here are it's results (the i3 should last longer because it is less power hungry than the i5): Battery Eater tests resulted in a 13h15m rundown time, although when you start browsing the web that time drops down to 6h36m. If you add another battery to that, you can increase the battery life by another 3h18m, and the i3 model will last even longer.
Pro TrackPoint included
TrackPoint is the red dot that ThinkPad laptops are known for. They provide an alternative cursor-movement option to the trackpad, and in this case a much better one. It is very responsive, grippy, and there are left/right click buttons above the trackpad that are perfect for using with the TrackPoint.
Pro Amazing keyboard
Lenovo knows keyboards. The keyboard they used here is one of the best typing experiences of any laptops. The keys are concave on top, which lets your fingers rest in the middle of the keys easier. Travel (1.6mm) and activation pressure are very good considering this is a laptop keyboard. There are two levels of backlight available as well.
As an added bonus, the keyboard is spill-resistant.
Cons
Con Lackluster screen
The base model comes with a very lackluster 1366x768 TN panel which you can upgrade to an IPS panel for $50, or a 1080p IPS panel for $200.
The bottom-end TN panel had washed out colors, and only scores 67% of the sRGB color gamut.
The 768p IPS display had some backlight bleeding and brightness was below average.
Con Parts get hot
Even under load, most of the laptop remains very cool. However, other parts get very hot. Usually 95F is a good boundary to between comfortable and uncomfortable. The rear left corner (beyond the Q, W, and E keys) reached temperatures up to 113F while the average top temperature was less than 88F. On the middle-bottom-left, it reached 120F.
Con Poor performance
The base model performs well enough for very basic tasks - Microsoft Word and web browsing. With only an i3 processor (i5-6200U is $100 more, i5-6300U is $200 more, and i7-6600U is $450 more), 4GB of RAM (8GB is $60 more, 16GB is $180 more) and a 500GB 7200RPM hard drive (which you can upgrade to a 128-512GB SSD for prices from $90-580), the basic model is a very poor performer for anything beyond very basic tasks, and the upgrades are costly.