What do you want to do with the model? Do you need battery life? If I would use a x model, I'd want to use it without an additional ac adapter. The x40 is also lighter.
It'd only be used at uni lectures/library + traveling; for lightweight computer programming, I'm asumeing Notepad++, Eclipse etc will run fine on either machine. At home I use my desktop. Weight and AC isn't so much an issue they only differ about 300g ~ 400g? Physical size matters though so I don't want anything bigger then a 12.1", tried a 14.1" R51 a few days ago and it was huge. AC's only an issue when traveling, but 90% of the usage will be indoors near an AC, although I'd prefer not to use one.
In this case the x40 model looks far better.
As far as looks go from the few pictures I've seen around the web they both look the same. I'm not buying a thinkpad for looks though
I'm buying a thinkpad cause it's solid and has by far the best keyboards out there.
Batteries for notebooks will be very expensive as prices do not decrease so much.
I'd buy an extra battery from DealExtreme either way; X31
- SKU 29647
or for X41 - SKU 29646
/ SKU 29119
I've bought a laptop battery there in the past and it worked fine, 35 USD - 45 USD depending on what I do isn't half bad.
Still not entirely sure which one to go for, I'm leaning towards the X31 since it has a 2.5" drive which is cheap to swap out as opposed to the x40 which has a 1,8" drive which is expensive to swap out. Are there any common problems with either model that I should know about? How's the screen on either? On my desktop I'm used to my Dell U2410 IPS screen and am slightly worried about going to a TN panel, the GF uses a 13.3" acer timeline for the same things I plan to use my 12.1" thinkpad for, her TN panel seems very "washed out" and black and white levels are horrible, I'm unsure if I could live with a TN panel.
The answer does not really change viewtopic.php?f=3&t=94910
Read the thread so it seems the X31 is the better choice. Now to the other question is 120 USD a good price for it? Should I buy it.