I have an 5 year old T60 and love it. What I like about it:
- Durable. I carried it with me on trips and it still works. Its build quality is much better than other laptops.
- Good keyboard. Very important for me as it is my main machine for coding. I like the keyboard better than many full sized ones.
- 4:3 aspect ratio, 1400x1050 non-glare screen (can fit more vertical code).
- Trackpoint device (the "nipple" as some call it). I never liked trackpads (but it has that too, I just disabled it).
Recently my kid tore out some keys off of the keyboard, I started to ran out of disk space on its old 60GB hard drive, and my fan got kind of loud. I considered buying another machine. Looked around. But the more I looked, the more I realized that I just wanted this machine. So I got a 500GB hybrid Seagate Momentus drive, a new fan and a new keyboard. Spent an evening upgrading it and now I am hoping to get more years out of it.
Opening it, it just confirmed the build quality. The components inside, the materials used just seems better than in equivalent HP and Dell laptops I had to take apart.