2nd part to my question here: Okay finally managed to buy a used EOS 50D with only a 3600 shutter count Now I need some help with the lens. I have four options. All these are used lenses. 1). Canon EF 28-200 USM 2). Canon EF 28-135 IS USM 3). Canon EF-S 18-200 4). Canon EF-S 17-85 IS USM Please comment your opinion on all lenses. Thanks in advance.