First step into DSLR, did have a T70 with about 6 lenses, most bought used.
Bought without kit lens - bought 17-85is instead. I use this for work sometimes (industrial) and have brought it to China several times and shot great photos inside dimly lit mills.
My only gripe is the limited number of focus points and no real ability to manually focus when I want to (viewfinder dark, no "screen" to manually focus with), have gone to center focus only as it appeared many people on forums had. I did look briefly at the Katz eye focusing screens, but with the XT you loose the red focusing points then.
Never having used a 1 series camera the light weight doesn't bother me - and for relatively compact lightweight travel I now take 17-85is, Sigma 30 1.4 and 70-300 DO is.
Highly recommend the camera to start into DSLR. Being a bit of a gear head I've also picked up 24-70L, 16-35L, 100-400L is, 50 1.4 Tamron 90 Macro, Sigma 70-200 2.8.
At this point I'm looking at second DSLR, leaving the XT for "easy" travel. Was going to go full frame with 5D, but the 1DMK2 really intrigues me - looks like for twice what I initially paid for XT I can get a used one with ALOT of life left in it. 1.3 crop gives me wider with 16-35, but still a bit extra "reach" with 100-400. Better focusing, ability to manual focus (better / brighter viewfinder).