It's time for an upgrade and I need advice on a new amp solution. I hope you all can help me out.

I am looking for an amp solution that can do very decent quality for stereo music and can also do 7.1. I see two scenarios - a single 7.1 amp, or 2 amps - a higher quality stereo amp and a separate 5.1 amp. I am leaning toward the second option as music quality is important to me.

I will be pairing this with a Marantz AV 8801 and ACI Sapphire XLs (small 2-ways) with an active ACI sub
I listen to music in stereo only
I prefer to keep the same brand for both amps in the second option
I would like to keep it within $3000 total but can go up some for the right solution
I don't need a ton of wattage, but I would say 125-150 RMS @8ohms with moderate headroom as I may change my speakers soon
I have a preference for clean detailed sound with a hint of warmth in the mids, but will consider all decent options

I have been looking at Anthem, Parasound, and ATI but am really curious to know what specific setups you recommend.

Thank you in advance for your help!