What decibel level do you listen at? What is ideal?

@jrareform - if your room is sufficiently large & your speakers / amp combo can handle it, I find my ears start to overload around 103-105 peaks assuming the  music is well recorded. I listen at that level very occasionally just for laughs. I know my speakers/ amp combo can play all day louder than that undistorted as they are highly sensitive, can handle lots of power & I have a pretty powerful tube amp. 

@jonwolfpell

Having high power amps is not about the ultimate volume. It is about dynamics and transients. The more current the amp can provide improves the dynamics and solidity... especially in solid state amps. So, with all things equal a 350wpc amp will sound much better... solid and dynamic than a 250wpc or a 150wpc. While overall quality trumps just power... in sold state amps bigger is almost alway better... even at 75db.

About 65-75 Db. Maximum

+1 with @ketcham8 !!

nothing better than when I have a block of solid time home alone.

Mine is around 60 to 70. I push to 80-85 when rockin the system.