Fluoxetine wrote:Okay - Sold my Olympus D-SLR...Enjoyed using it, and learnt a fair bit - But its low light performance / lack of options for glass were starting to become slightly limiting.
Moving mainstream, with a Canon or a Nikon body - Had a play with a friends 5D Mk2, which was awesome. But too expensive.
Budgeting £700-1000 for the body - Narrowed it down to either:
5D Mk1 - Full frame, but perhaps not so good for low light /track day photography
or
1D Mk3 - Cropped, but 11fps and mega fast at focusing
Any opinions?

The 7D discussed sounds an ideal compromise
I bought a 5D mk1 last year - decided I wanted a full-frame camera body and the 5D2 and 1ds options were just too much. I've used it once for motorsports, its not bad, but the lack of 'crop factor' makes even 300mm lenses feel pretty short at Knockhill. I totally love my 5D though, for image quality and the scope it gives for using dof creatively it's hard to beat a ff body. In terms of design and feel its certainly an older camera, the 7D feels a generation newer.
On the lenses, it could be argued that the 7D is actually more likely to need more expensive gear than the 5D mk1 - its 'sensor density' is much higher than the 5D, it'll 'ask more' from the lenses it uses. iirc, the 5D is around 1.5 megapixels per cm², the 7D over 5 megapixels per cm². Used non-L lenses on my 5D with no problems - not to say that it doesn't shine when using nice primes though
The 17-55 looks like a good bet - basically a 24-70 for crop-body cameras - always seems to get a good write-up. For tele-zooms, I'd look at getting a used 70-200 f2.8 mk1, the mk2 is out now so you might be able to find a bargain mk1. I'd look at getting at least one prime lens as well, even if its only the 50mm f1.8. Gives you more options in terms of dof and low light.
If you are doing gig photography then you may want to budget for a decent flash as well? (...or not depending on what venues / bands you are photographing)
I'm looking at a 2nd body as well now, pretty much decided on the 7D - probably pick one up before summer

(though if I see a decent used 1ds mk2 i'd probably grab that instead

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