I'm not sure if the is best way to go, but I'm going to find out. The guys that grind cams and guys that really build high output motors say it is the only way to go. Does everyone need one? I don't know. The cam card for this cam is nothing like I would've exected - lift is 'lowish' and the duration is mild, but the exhaust timing events are ALOT different and surprising - no advance is ground into the cam and he recommends to install straight up. Chris said that this cam with the heads, compression, rod to stroke ratio and intake should easily make 500 crank HP somewhere between 12-14 psi which we are running. AND, still meet the mileage goal of 20 mpg (or darn close). So I figured with E85 we should be able to put down 500 to the wheels with no issues. It would be fantastic if it mamaged to put down 500 without the E85, but time will tell.
Regarding the price, it was an extra $250-300. Considering my son has over $2500 in the trans, about $1500 in the rear, decent long block - $2500 without the cam and intake, etc, etc, etc. After thinking about the additional cost for a custom ground cam it doesn't make any sense to cheap out there - IMO. We cheap out on a lot of things like fans, crankcase evacuation, etc. We fabricate everything we can (look at the fuel pickup^^), we're just trying to spend the money in the best places.
Time will tell.