Canvas Backgrounds - where's the best source?

Adorama? BHPhoto? where do you guys get your canvas backgrounds? I have a couple muslin but need a good brownish background for family portraits - hate to get one ordered for $500 and then it sucks.... Any other places besides the two listed? thanks!

I have a couple of canvas BG from Denny Mfg. I would never have spent the money on them new - got them used at a studio that was closing. They seem to be excellent quality. I have a small 6 foot gray for headshots and a large 10 x 10. Both are 'old master' style.

I used a scenic canvas once and did not like it.