I purchased a Marmot Highlander jacket from Campsaver recently. Their pricing was very competitive and they had the color I was after.
I was a little worried given some poor reviews but went ahead with the purchase.
Well what can I say, I received my jacket, it's exactly what I was after. They used UPS to ship the jacket and I could see exactly where it was (note I am in Australia). Campsaver customer service was excellent keeping me informed of when my jacket would be sent and followed up that I had received it.
Will definitely buy through them again. Seriously this has been as good experience as dealing with any of the large international companies.