I m using M40 here..
Personally i dun feel like to go for IBM..Why?
1. Comservative 70's or 80's design..
2. Trackpoint is a big NO to me...Imaging pointing a little finger on a nipple thingy to move ur cursor r not big fun
3. Normal LCD screen
4. Normal specs with no advance graphic cards
5. Not made in Japan liao...

What I like about IBM
1. Good batt life
2. Solid magnesium casing