It's a big jump. So for an 80 gal that does 15cfm at 90 it's about 1000, for the same but at 30cfm your looking at $2000.
The annoying part is that all of the name brand stores only carry the 15cfm stuff.
To produce the at least 25cfm it will need at least a 7.5hp motor.
I will keep hunting, I think this will end up being a princessauto or TSC purchase.