The Air 1 is a lot easier to tune and maintain and for practical diving purposes, you get probably 95% of what the Pilot delivers in terms of inhalation effort, but with the benefit of greater stability, no chatter, etc. Given that I don't plan on diving at 1800' I don't miss what the Air 1 does not have.
The Pilot and Air 1 are the only high performance second stages they have ever sold with left and right inlets and with the growth in side mount diving, regs that can quickly and easily be switched from left to right inlets by the user, will be in great demand. The Air 1 and Pilot qualify in that regard, but as far as I know, Scubapro has no plans for a high performance second stage with the ability to switch the inlet side.