I have a 30D and have been thinking of upgrading to the 5D-II before the 7D was announced. Now, I'm not sure which one to go with. Tending toward the 7D but only about 60% convinced.
But that's not the question I'm posing.
I currently have several lenses, but my carrying-around lens is the older EF-S 17-85 f/4-5.6 IS USM.
I have been feeling the need to get a faster lens, so was originally thinking of the EF 24-70mm f/2.8L USM -- especially considering that I might move up to the 5D-II.
But then I've read some comments from users here that they like the EF-S 17-55 f/2.8 IS USM. The advantage of this lens would be that it would give the wider angle for the 30D and the 7D if that's the path I choose.
So, any thoughts on the pros/cons and advice on:
EF 24-70mm f/2.8L USM
EF-S 17-55 f/2.8 IS USM
The cost difference is only a couple hundred dollars, so that's not really a factor.