Exposure Manager for me as well!! VERY powerfull, and you can customize your site how ever you want!!
You can use them to print and ship, or you can do that yourself with your own printer. It has all the same features as any of the other places out there, and it costs less! They take less off the top of your order as well.
I did a ton of research before I picked a host, and they were WAY ahead of the others.