VF3's are SLIGHTLY better than some of the Boyesen's. Boyesen Dual Stage reeds sell for $40 shipped on eBay and will give you about the same results as VF3's, which run about $140 shipped on eBay. I think Boyesens are best for the money, VF3's are just wayyyy over priced, IMO.
ALSO, VF3's are mainly used on highly modified engines. If you have the money, the "souped up" engine, then definitely go with the VF3's.