Denon 4310 or Pioneer sc-25/27 AV??

What do you prefer? best sound receiver?

I´d like accurate natural sound but musical and lively.

I´ll use it for music too.Small room so low level listening.

I have the Denon 4310CI and believe the performance is outstanding. I think the sound is accurate and natural in either 2 channel or HT situations. I would recommend this unit.
The pioneer receiver's has more power and the THX certification, i would have such a nice receiver like it.