Right now I have 2 image dynamics 12's with 2 Phoenix Gold Octane-R 5.0:1 amps runnin 1 to each sub. I was lookin at gettin 2 phoenix gold xenon 600.1 amps,1 for each sub. but someone on here suggested lookin at soundstream van gogh series. so i wanted to know how a van gogh would stack up against a xenon series. I like the way my phoenix gold octanes sound now so I would expect the same from the xenons but better. the only thing that i was thinkin about was that it says that the soundstream gives great sound quality but I also want good SPL too and i was wonderin about the SPL they produce. The phoenix Golds give good SQ and good SPL, but the soundstream seems to have better SQ and clarity which I want, but I wannna know how good SPL they give. Any suggestions or advice?