For small personal projects, iTeadStudio[1] is my go-to PCB fab house. If their design constraints fit your needs, I'd def recommend giving them a shot. I've personally spun 10-ish projects with them and have yet to be disappointed...just try not to push an order around Chinese New Year if you're in a rush.
[1] https://www.itead.cc/open-pcb/pcb-prototyping.html