I live in spain and 90% of my gear comes fom Usa my experiences are
backountrygear.com …. well except some mistakes is quite slow expect 3-5 to receive the stuff
Backpackinglight perfect….. but if the items are out of stock expect a very very veeeery long delay (sorry ryan ;-) but no problems with
argear.com….. 3 weeks (they asked me a copy of my card by fax ¿?)
prolitegear.com (no problems, perfect)
gossamergear.com ……….. the best customer service (2-3 weeks)
other option in europe is raidlight.com in france