ok after resetting my dvddecrypter from 8x to max, I realized that it said 2x,4x,6x,8x,12x,16x as supported recording speeds....
I never mess with what works so it really never bothered me, but low and behold I just burnt a data disc @ 16X using Memorex 8x rated discs
after perusing over rpc1.org it seems that Pioneer actually supports this out of the box! silly me!
Also I saw somewhere that NiL and Gradius say that it may be possible for 4x@16x firmware!
All I can say is if its RiTEKG05, its the best media avail hands down