im a Thinkpad *****, i love them, i always buy 2nd hand a few years later though apart from my current machine i bought new. I currently have here we go lol....
IBM T23 (my first laptop, just never got round to selling it, i maxed it out spec wise about 6yrs ago a mighty 1.2GHz PIII-M with 1GB of ram lol!
IBM T40 solid, slim, light, used to use it when i was on the move but donated it to my sister, shes not that keen on it as its "boring" to look at with no webcam etc lol! (upgraded to a 2.2GHz P-M, 2GB ram, fastest IDE hard drive i could find! flys in windows xp for what she uses it for!)
Lenovo X61 (this was my machine i replaced the T40 with, little 12" machine, i spent a BOMB upgrading it to a 2.5GHz core 2 duo as the cpu's are soldered onto the motherboard so sourced a brand new replacement with the 2.5 LOL cost me about £300 just for that! also runs 8GB of ram, OCZ SSD. i like it to much to sell it, im one of these people that holds onto stuff!
and my new machine that i replaced the X61 with as my daily is a Lenovo X121e, Intel i3 1.4GHz, 8GB ram, SSD etc love it, its brilliant!