I have been using a T60 for a number of years now. It is just old enough to still say IBM on it, even though i bought it through the Lenovo site. It is on it's last legs -- the fan, which is out of alignment and is super loud, periodically stops working leading to the whole machine overheating and shutting down, several the USB ports run at 1.1 speeds (likely because I fried them plugging in some hardware that I built), if the video is stressed at all (animated gifs are enough) it interferes with USB audio, etc. Maybe these are driver issues, maybe it is just too old for modern video stuff, etc., but I have been fighting with some of these issues for years with no luck. And, trying to run Illustrator/sketchup/photoshop is a real chore. I'm on the second screen, the third HDD, the third battery, the 3rd DVD drive, etc.
But, issues aside, the T60 is, in design terms, just about the perfect computer to me. Any bigger would be too big, but any smaller would be awkward. The keyboard is perfect, and perfectly worn in. Really, even from day 1, everything about the form factor just felt right. And, the screen is visible from all angles -- close to 180 degrees. Reading here, I gather that this is not the case any longer.
Anyway, I ordered a T410 a few weeks ago -- apparently right before they announced the T420, oh well, I guess I saved a few $

It arrived yesterday, and, well, it sucks. What on earth happened to make these things get thicker and heavier from t60 days? Yes, I could have bought the "s" version, but the $ and speed hit seemed like too much, and the reviews (cracked palm rests) on this site have been awful. But, overall, this thing is just too big. The keyboard positioning is poor. The bevel around the screen is too thick -- if they made that thinner and took 3/4" off the overall width (and took the stupid speakers off from the side of the keyboard where they are just going to get filled with crud) this would make a huge difference. The keyboard is not up to IBM Thinkpad standards and feels just so-so, the layout is not comfortable, and the overall design is just, well, ugly. There is nothing nice looking or feeling about it. I haven't even turned it on yet.
Frankly, there are two reasons for me to buy a Thinkpad -- trackpoint and the keyboard. Well, Dell sells a computer with a nipple mouse, and the keyboard on the T410 is just nothing special anymore. Am I overreacting?
So, do I just suck it up? -- a T420 is not going to be any better with the 16x9 screen as I spend my time typing words on the screen meaning that I really prefer a 4x3. And, other than the Dell which costs almost as much, there aren't many options out there. The X series is simply too small. Do people just get used to this? Is everything junkier than it used to be? I guess I can get a docking station, some external monitors turned 90 degrees, but then why did I buy a laptop. Tell me I'm not the only one who things this design is poorly conceived.