i've got a Yamaha RX-V2400, and i think it sounds fantastic. i chose it over a similarly spec-ed Denon receiver because of price (couple hundred cheaper) and because i was more familiar with the brand name when i bought it. when i initially had the 170 classics hooked up, it did sound bright, i will admit. i had to turn the bass up on my receiver to get it closer to the sound i wanted, but when i upgraded to the SE models, that all changed. the bass level on my receiver was returned to its original setting, and everything sounds great.
i use the speakers mainly for music (probably 95% of the time is listening to music) and have never had any complaints about the sound. that said, i don't like a whole lot of bass in my music, i just like the lower end to be full enough to give the sound slightly more punch. when using it for HT, there is a significant increase in the amount of low end sound it outputs, which i assume is because of the sound programming in the movies is heavier on the low end.
all in all, i'm very happy with my yamaha receiver, and i would recommend it to others.
CMT-340SE2 Mains & Center, CBM-170SE Surrounds, Rythmik F15, Emotiva XMC-1, Emotiva XPA-5