The JumpStretch bands are supposed to be the best, which is what Elitefts sell.
Here's the jump stretch sites distributor list encase that helps,
The bands I have are Ironwoody bands. Some people say they are exactly the same and some people say the JS ones are better. I would of preferred JS bands but you can't get them in the UK. The Ironwoody ones were hard enough to get hold of.
I got them here, not that I think it will be any use, but thought I would post it anyway,
http://www.londonkettlebells.com/ironwo ... bands.html