Hi everyone,

This my first post here, I hoping that you can offer me some advice.

I bought a Sony NEX3 with the larger flash last year as a step up from my compact camera. Since then I have found myself getting into nightclub photography as a few friends run various nights that I attend and take photos at. The Sony has served my pretty well and taught me about using manual setting but I think it about time that I upgraded to an SLR to help me improve my shots.

Im looking to buy secondhand and my budget is around the 700 mark.

At the moment this is what Im currently eying up:

Canon 550D or Canon 400D
Tamron 17-50/2.8
Canon 430EX Flash

Ive researched quite a bit but the more I read the more I get confused, a few poeple have recommended Canon over other makes in my budget range as having better sensors but I dont know if this it true or not?

I would be grateful of any advice.

Thanks in advance