www.dpreview.com is a superb site. Another very informative site is Ken Rockwell's -
http://www.kenrockwell.com/index.htm
I have a Canon Powershot G2 - my first digital camera bought in 2002. These days, I mainly use a Nikon D50 digital SLR.
The first thing you need to decide, given you have past photography experience, is whether you want a point-n-shoot or a dSLR. I got my Nikon mainly because I had done many years of shooting with my other 35mm SLRs, and I found the Canon was just not what I really wanted in a digital camera. It's still a great camera, and I still have fun with it at times, but I would not want to be without my dSLR most of the time.