OK I've more or less decided on a second hand 40D but a new Canon 100mm f2.8 macro and new Canon MR-14EX ring flash because I can't find second hand ones of either. The thing is I'm not sure about the "normal" vs "L-series" 100mm f2.8m lens, there is a substantial price difference (almost double) and I'm told that because in macro I will be using a short shutter speed, there isn't much benefit to getting the L series Image Stabiliser lens. What do you think? Also what kind of camera bag should I get? Just a basic one I guess..