Well, for the price i purchased them for (bought 2 for $90 Canadian each new) these subs are amazing. They run awesome on my two Ap15001d's . They are rated 1000wrms/3500wmax. Pioneer built these things to be quite stout. Even it's spider has a surround, which i have never seen before.
The only down side to these subs, is that they are not meant to be used in a ported enclosure. This is because the bottom part of the cone is completely sealed off. The only parts pushing air from the back is the spider, and that has to push air through a grill which is only meant to help cool the voice coil.
However, i use mine in a ported box, and they still sound pretty amazing.