sources for 1.5" PEX needed

Does anyone know if there are any sources other than Uponor (Wirsbo) for 1 1/2" PEX? I need something that has an oxygen barrier also.

I would either check with Cozy Heat or go to this heating pro website and ask them. They're very helpful and knowlegable:

http://forums.invision.net/index.cfm?CFApp=2

I struck out at Cozyheat and also at Houseneeds.com, so I guess I'll try the other forum.

Thanks for the help.

Here's what the guys on The Wall recommend:

"RST Inc in Norwood, MA is a rep for Rehau and that have all kinds of large diameter stuff, insulated and uninsulated in their show room. If you give them a call they may be able to point you to a supplier. 781-320-9910"

This sounds great, I was completely forgetting about Rehau. Thanks again for all the help.