So I've been kicking around plans for a 2nd body to use at some weddings I have lined up for the spring/summer. No question I need one, but I'm a little torn on what to use.
Option 1 is rental, and I think I would do a 1D4 at that point. Sure it's a crop sensor, but a usable ISO 12,800, great AF, backup to a 2nd card, and great battery life are big selling points. No way I could afford to buy one right now, though. Another very real fear is that I would never want to part with a 1D4 once I got my hands on it. 
Option 2 is buying. With a little saving and an as-anticipated tax refund I could swing a 7D, or with a little more saving, a 5D2. I'm kinda leaning toward the 7D because of battery compatibility and the added reach I could get for candids etc.
I feel like the 1D/7D would complement a 5D to not only provide a backup body, but also provide better AF, more reach, and higher FPS for capturing the candids, etc.
Seems like 1 FF and 1 crop is a pretty common setup. What bodies do you guys bring on wedding days?


