I'm a snowboarding kook**, but worked in an office with a couple of Swiss snowboard nuts, used to instruct and work in shops etc...

They recommended this guy, often over shops they had connections to. He is an older guy who runs the business out of the large cellar at his home. Respected by boarders and kind of disliked by other shops because of the low prices he charges (low overheads).
http://www.snowboardshop.ch/cms/index.php

I've visited the shop with my wife (a very good snowboarder) and she was very happy with the advice and service. Got her dream board and bindings there for a great price.

Personally, I have kitted myself on the cheap, as in this thread:
Seasonal Tips - Autumn

**Kook as in surfing jargon for beginner, lowly skilled