Look at this older thread:
Knives or chisels for sign carving?
It has some good information and sounds like something that you're looking for.
Pfiel is the most popular Swiss tool manufacturer. Check out Woodcraft for a good (but costly) supplier. They generally have a better selection. You can then use that information in comparison shopping.
Add: From Canada (usually better pricing):
http://www.woodcarvingbiz.com/Pfeil.htm