I looking to set up shooting weddings starting next year. I've just got my 24-70 2.8 (yay!!), but while I was in the shop was playing around with the 70-200vr.... wow... it's awful big... I'm wondering what percentage of time is the 70-200 mounted on your camera during wedding shoots... I'll most likely be using D300 still next year for main body so wondering if I'll have most of the range I need with the 24-70... Was thinking about picking up the slower 70-300 instead?? Bad idea??