I'd buy from the Internet. Prices are so much cheaper than Best Buy and Circuit City. Sit at home one night and just start searching the internet for the specific model you want. Picking the model is the hardest part though.
They are a huge photo site and they have links and special deals for tons of cameras. They also ususally have freebies with it, like free digital prints or my friend got a free advantix camera and film with her digital camera and including shipping, it was all cheaper than any store.
I bought a G3 from Dell.
Check out http://www.bensbargains.net. look around for camera deals.
the current posted camera deals expire today, but they have been having alot from day to day so keep an eye on that site if not ready to purchase today.
I spent alot of time looking for the best price / reliable / authorized dealer.
I settled on Dell because it was a little more than Buydig at the time, but wanted to make sure I was covered if something was wrong with the camera. A friend bought the same camera from Buydig a month later and had no probs though.