Another vote for a 2nd 7D. Sharing everything is just too convenient, and cheaper in the long run.. though the initial layout might be greater. If not a 7D, i would say a 1D Mk II. Although aged, it's still an excellent sports body(fast AF/burst, rugged, hurricane-proof lol).. the AF is sweet! Actually.. ISO 3200 would be pushing it on the 1D II.

I also thought the 1D2 would be a little behind compared to today. The price isn't bad, but I don't see the justification of an N which is essentially the same price as a 7D.
Save and get a 1D3 or go with another 7D. You won't be happy with anything else, in my opinion.
I thought about the 1D3 but the cheapest I've seen them are ~$1600 with the average at $1900. Thats a little more than I want to spend because that extra $4-800 can go towards more gear 
Get the 1D3, realize how great it is and make your 7D a back up
I already know how great it is. I've used them at work as well as the 1D4. I love the 1D series, but I can't justify the costs at this moment. I wish the 7D had voice recording and AF point attached spot metering though.
I was gonna say the 5D for a backup but by the sounds of it you shoot more zoom then wide so perhaps another 7d?
I shoot wide, but not often. Its nothing a 10-22 or 11-16 can't take care of.
Get another 7D
It only makes sense to have as a back-up camera the same camera as the main.
Why?
Aside from what you already mentioned ( shared resources ) ........ FAMILIARITY is most important.
If your main 7D goes down for whatever reason, when you pull out your backup camera you will not have to worry about messing with controls because you will KNOW where everything is.
Just make sure the settings in you backup 7D are the same as your main 7D.
Never could understand why people who *need* a backup camera would choose something other than what they shoot with regularly.
The only reason people would get a second body with a different sensor is for versatility. I agree though, having two of the same camera would be the best for handling.
7d, you know the camera, and having the same as a backup means no learning curve, if you switch cameras it will be much more fluid if they are the same,
Sounds good.
I would pick up another 7D body.
On a related note, im selling my new (purchased in september) 7D.
You should PM me an offer I can't resist. I'm keeping an eye out on CLP for a refurbished 7D.




