Rating: 5 / 5
Campmor has an easy to use interface on the web, located at campmor.com
They have all types of camping gear, from long term pads to ultralight titanium. They don't have everything, but they have a pretty good selection, and they were pretty responsive to my questions and order.
I'd give them a 4.5 overall, but they're clearly better than some of the 4.0 companies listed, so I went with the 5.