Best D-SLR for £900?

Hey
I’m thinking of spending about £800-£900 on a decent D-SLR to drastically improve my air show photography so I can get my site sorted out how I actually want it (if anyones interested my gallery which I’ve only just setup is here) as well as learning a lot more about photography.

For £900, what do you think the *best* VFM D-SLR is in terms of features, effective/max pixels etc? I’m looking at the EOS 20D or a second had 10D but I’m not too sure to be honest.

Regards,

Jamie.