Also a big fan of the PPI Phantom amps. All of these small Class-D amps are basically clones of the first ones that were made for ARC. I suspect they even come out of the same factory. The WetSounds are custom designed to a different specification and more expensive because of the brand, the support, and the hydrophobic coating that they apply to the boards. NVX/PPI/AudioPipe/Kenwood/Polk/etc Class D amps are basically all the same. I like the PPI package but wouldn't have a problem with any of the others. Also, these amps are so inexpensive I would add 2 of them -- one dedicated to the speakers and one for the sub. It's worth it.
Former owner of a 1987 Supra Saltare. Current owner of a Malibu 23LSV.