after my last event I shot, I've been dealing with some issues with my camera body. Not issues with it, like mechanical, but more so, that ISO 1600 is totally unusable (I have some 8x10's coming that will hopefully prove me wrong). There were a few other canons at some of these events I've been shooting, and the 40/50D's @ ISO 1600-2000 are crisp and much clearer then my XSi's 1600. I'm at odds at what to do, because I know come September and December I have events that I will most likely need ISO 1600 or better. I've looked @ the T1i, and the 50D, haven't had a chance to play with a 40D quite yet. I've come to the conclusion that, in all honesty, I don't really use my 55-250 f/4-5.6 nearly enough to justify even keeping it at all, and that I am willing to part with the 18-55 for some time and to hold off on landscapes unless I can borrow a lens or something. So, I was tossing the idea around, of putting my XSi up on craigslist or something to sell it, complete with the 18-55 and 55-250 and 2 8gb class 6 SD cards and all the software etc... I've talked to b&h and I can get a 40d for 740 (refurbished) or 1000 for a 50D used. I'll look around more, but the 40D looks enticing. I figure I could sell the XSi + the two lens and such for maybe 670-700 dollars. what is everyone else's opinion on this? I'm not exactly to the point of making money yet, but I'm on the verge of it. I got a book I'm doing for october-ish and some other things coming as well, so I think I can justify the jump, sepcially for better ISO and faster frame rate, which will help for the weightlifting events I cover. Do you guys think I could get that much for the XSi?