from me, I've never had any problems with anything I ordered. I'm about to order some o-rings from Punishers though so I'll put that up as well when I get the package.
Well I just ordered the piston o-rings for the vertical maxflow I got at practice last weekend, so far I don't like their shipping & handling. Explain to me how it costs $6.05 to put two o-rings in an envelope and mail them via USPS Priority Mail. I don't think you can.