My friend suggests EZ Prints. He said that Shutterfly actually uses their technology, so going to EZ Prints would cut out the middleman.

They do cool things like send you two 8x10 prints to use as calibration for your monitor, so that the way it looks on your screen will be exactly how it comes out when printed.

My friend showed me a pic he got printed, and it looks great. He just ordered an 11x14 print, so we'll get to see how that looks. Just for reference, he's using a Canon D30.