Ordered a second hand Thinkpad X301 from Taobao on Monday night and received it this morning, very fast. This is my replacement of X61s. Since I don't like the new keyboard layout so X230 - X250 are all out. X220 is my original plan but it's wide screen.
X301 was released on 2008/09 and I thought it might be slow but when I use it, it's totally acceptable. I don't think it will be slower than most X220 in term of user experience (not counting the numbers but simply the overall feeling when using it).
I paid less than HK$1,400 for this machine with U9400, 4G RAM & 64G SSD, I feel very happy to have bought it.