SAFC neo is just a VAFC and SAFC put together. VAFC are for Vtec motors.
It depends what your power goal is if your planning on sticking with the stock turbo and are happy with around 200rwkw then go a SAFC. If down the track you want a bigger turbo and are chasing more power id go the Power fc. But with prices of the Power fc these days you would be silly not to consider it.
And no they are all generic you dont need a specific one for an R33
Cheers
Chris