Hi to all,I'm currently using the eos500 and i realised that the in-built flash has it's own limitations as i cannot attach any diffuser such as the omni-bounce to it and it cannot be tilted or wadsoever...With a rather tight budget of $$100-200,can anyone pls recommend me a flash which is compatible with my camera??Also if possible,pls tell me what to look out for when buying a flash...thank you all very much