Woofersetc.com
I recently bought a set of cdt components from woofersetc and recieved great service. Really good prices and selection. I also got the free shipping and recieved my speakers the next day, granted the store is in california and so am I but still, next day is pretty **** good.
Ikesound.com
I also bought an amp from ikesound. It took a while for me to contact them by phone because of the time difference. They had the best price I could find on my orion 4002 but shipping was a little high at $25. Also it took a while for me to be able to track my order, and I ordered the amp last thursday and am supposed to recieve it tomorrow (8 days later).
Bestbuy.com
I did some searching and figured it would be cheapest to buy my deck from Bestbuy and get the free installation then to buy it from an online dealer and then pay for it to be installed. Everything went smoothly and the installation was very clean. My only complaint was that I had a rca cable installed so that I could play my mp3 player and they didn't even turn on the aux.