Originally Posted by mikemex
Also, the R60 isn't that much bigger and being thicker is more strong.
Just because it is thicker, doesn't mean that it is stronger. IBM/Lenovo uses all plastic in the R series, thus making them cheaper. The T series uses magnesium alloy, in addition to plastic.
Back to the OP, I think the choice would really be yours. It has been commonly stated that the R series (same with the old G series) is meant to be a desktop replacement. They are heavier and bulkier than the T series. Given that information, if you plan to replace a desktop and don't plan to travel with it too much, then the R60 might be for you. If you plan to travel alot (ie. take the train to work every day) I would recommend the T60.
My R40 (2.2GHz, 80gb 5400rpm, 1GB ram) and my T21 (PIII800Mhz, 60gb 4200rpm, 512mb ram) are my most commonly used Thinkpads. Yet, because I can feel a definate difference in quality between my T21 and my R40, my T21 travels with me everytime I go out of town. The R40 remains on my desk at home.