That Fast setup only has 12 drivers. In general the stuff is fairly comparably priced, so if you're getting wildly different prices it's a good sign you've got a different configuration for one of them (although I've told Gerry that IMO the SW-16 boards are too expensive, but I don't think that's because of profit, they just seem to have a bunch HW on them to make them really flexible).

The P-ROC community is MUCH larger, so if you want that shared suffering when things go wrong, cheers for successes, or checking out what / how other people are doing stuff that's a strong argument for that direction. Fast may or may not eventually get as large, they just started actually shipping so it's too early to tell.

Disclaimers: I've been around in the P-ROC community since the start and helped on some code stuff. I've talked with the Fast guys but not used their hardware.