Burnsie,
I'm all for shooting expensive broadheads if money isn't a consideration, and for some of my hunting, the cost of the broadheads is so insignificant by comparison that I don't even consider it. If everyone on TradGang could be "sponsored" and provided Silver Flame broadheads for little or nothing, I can just about guarantee you that Silver Flame would be the most used and popular broadhead among the members here. They are GREAT heads, and I would use them on ANY animal I could shoot with a bow. It's good that you found some at a good price. Keep shooting and enjoying the quality of such an outstanding head. You are probably already spoiled.
I do think you will like the VPAs and Tuffheads. Remember to carefully choose the screw-in adapters for the Tuffheads, or any other glue-on broadhead. Most of the commercial models are not made of quality steel and will be far weaker than the Tuffhead. It's not fun to shoot an arrow into a big animal and have the hunter, bow, arrow and broadhead perform perfectly, only to have the insert bend. Most of the time the job of killing gets done anyway, but sometimes not. And the bent insert causes all sorts of problems in trying to re-use the arrow and broadhead.
If anyone knows a good source of quality broadhead adapters, please let us know. Joe Furlong, who makes the Tuffheads, is getting some titanium adapters made for the heads, and Abowyer has done the same thing, but those adapters alone are more expensive that many broadheads. They are a good option, but good quality, heat treated steel inserts would be as good or better. There are high strength, heat treated bolts made by the thousands every day, so the manufacturers have the capability. The trouble is having the demand for enough units and then keeping the cost down on such a low volume item, and not many manufacturers are willing to tool up for such limited production.
Allan