I heard the RS6s and RS8s not too long ago and yes, the 8s were more bassy (extra driver) than the 6s which could possibly muddle up the mids/highs a little. The 6s were smooth and detailed, easy to listen too. I read a review somewhere describing them as "bright"(not true). The cabinets are real veneer and nicely finished. Once you throw a sub in the mix, there's really no need to take the 8s over the 6s in my opinion. For two channel only, the 8s might possibly be the better choice. As I've mentioned before, these are nice, detailed speakers, they're just pricey esp. when you're buying a complete HT system. That's my $0.02.
...and the Gold series is quite a lot more expensive still, not as good value imo.
