I have been doing wedding photography for about 5 months. We are using Canon 30D's and there is a bit of a debate in our studio as to whether we should use continuous drive or the single drive function. I believe that using the continuous drive function (not the high speed function) is a better option because it allows the photographer to focus lock, take a shot, and take another if the situation demands it. If the photographer had been using single drive he would have to refocus and possibly miss the opportunity for a great shot. The other side of the argument says that while using continuous shot the photographer is frequently seduced into taking multiple shots of the same subject, none being much better than the next. I realize that this is perhaps a matter of "taste" so my question is as follows: what do you normally shoot with, continuous drive or single drive?