They really shouldn't have given up the ghost after just three years unless you're being really hamfisted with them. On the other hand, there is a lot to be said for the new Fox 32 FIT forks; they are really very good indeed. I have a set of Floats in QR15 150mm. They aren't the most supple fork in the world, but the high speed compression damping is really very good.
Can you still get Pikes as an air spring? I thought perhaps that the pikes were now coil only and the revelations now air only as a way of differentiating them from each other, now that the Revelation is up to 150mm.
I do know a chap who is selling a mint (and I mean mint, they are like new) air Pike 454s. They are in Freeborn at the moment along with his similarly mint Dialled Prince Albert (15" 853 not the newer cheaper Reynolds 721 or whatever). Not sure how much he wants, but frankly anything more than 10% of new equivalent price would be a bargain as they are so mint. Freeborn is 01403 251 252.