Thanks for the feedback. I bought a 430 EX II yesterday at my local photography shop. It looks great on my T3i. I'm am really liking it. I also ordered a diffuser on Amazon. It's a little cap. I'm shooting a wedding saturday as a backup shooter and I can already see how this flash is really going to help get some nice shots.
Also, I wanted to get a Gary Fong diffuser for the wedding but couldn't afford it at the moment. Anyone use on of those? They worth getting? The little diffuser cap I bought was only 11 bucks on Amazon
I use one indoors, and it actually works pretty well. Some love it, some feel you should bounce the flash. In the rooms I typically use it in, it works fairly well and gives good coverage without being overly harsh (unless you're VERY close up).