Friend of mine owns the previous versions, before the "G" I think, just the normal RP8. I think they are stunning for the price, pretty big bookshelf speakers though. Though I am used to floorstanders, I think those RP8s give plenty of bass, and very good clarity. I've not yet heard anything at that price point that performs better, or even close. For me the only turn-off are the looks.
As Abacus mentioned, they are really "neutral" sounding. Personally I really like this, but some people might miss the excitement that some hifi speakers provide. I haven't heard your amp/speakers so can't comment on how they compare.