Re: +1 for X220 mention
Similar here on an x201 - bought 3 yrs ago 2nd hand v cheap then totally forgotten until rediscovered a few months ago. SSD, another battery and boost to 8Gb and it's fine. A HD screen would be nice but probably not worth losing the 4:3 aspect ratio.
Lenovo should've tried to source a similar panel to the one on the surface pro and this 25 would've been irresistible.