I just got a board from OSH Park (oshpark.com) and was quite happy with the turn-around time (sent files Friday afternoon; received boards the Monday after the following Friday) and quality. Price was less than half a lot of the "affordable" quotes I got. You get 3 copies, instead of 5, but that was fine.
Two things I liked most was the up front pricing and smooth ordering process . I knew the full price, including shipping, before ordering.
The ordering process was very smooth. I did not have to submit the design and wait for a response. The price was based on board area only and was calculated as soon as you submitted the files. You can get a pretty close estimate without submitting anything, just by measuring your board. I submitted Eagle files, then viewed the Gerbers on the site almost immediately, made a couple of minor changes, resubmitted, and ordered. I wrestled with a DRG error, because I had a via on a pad. Communication was good and the DRG error proved to be irrelevant. The Gerber view was quite a nice function.
John