I've started using WHCC (white house custom color) as the main printing solution for my photography. My 2nd batch of photos just came back today.
I am not trying to spam, nor am I affiliated with them. I just wanted to say that I am absolutely satisfied with their prints and service. The ROES order system is very easy to use as well.
So if anyone wants an easy to use professional print service online I would whole heartedly suggest www.whcc.com
The only other Online service I have used thus far is winkflash.com. They too are decent for the price, but whcc is better quality. Both places beat my $50 canon pixma IP3000 printer.