GPO's - Any experience/recommendations?

Hi,
I am starting to do some research into (non-healthcare) GPO's and would like to tap into any experiences or recommendations other members might have.

I work at a non-profit and am primarily looking into this for Facilities and MRO type purchases (Office Supplies, Janitorial, printed materials, etc.)

Thank you,
Miles

I may be able to help. Email me at lejeunem@sms-inc.net

If you are still looking for info.. email me at scott_melanson@pall.com

I used to work for a non-profit. Depending on the type of nonprofit and where you are, you might be able to utilize BuyBoard.com or the TCPN.