Looking to become more familiar with DSLRs and was wondering if the older Canon Rebels (XT/XS/XTi) would still be worth grabbing? I can get one for under $200 with the lens and I'm mostly looking for something that can take better photos than my iPhone 5s. My only concern would be the shutter click count if I were to buy a used model, which is the route I'm wanting to go. In that case, at what shutter click count to Rebels begin to deteriorate? Obviously there are better DLSRs out there, but would picking up an older Rebel for cheap be a decent idea if I just need something better than my iPhone for photos?