I am going to buy a Rebel XT in a matter of months and I was wondering since you guys are photography gurus, what could be a great multi-purpose lens that I could buy to replace the kit "somewhat crappy" lens that the camera comes with? I am not totally clueless to photography, but not that well educated either. This last year I took a b and w photo class in college, and this upcoming spring I am going on a study abroad around the world (literally) so, I want a good camera to doc my trip. I currently have a film rebel ti with a 28-90mm lens (that came with the camera), but i hear that you get way better quality if you buy the xt with body only and perchase a lens. I am looking for a multipurpose lens that can work in all conditions and is reasonably priced (up to $250 maybe 300) new or used. Thank you all in advance for your help..........