The HK's are very conservatively rated and are a hich current design, don't let the 50 watts worry you. The other brands are fine also. Axiom speakers are very easy to drive, unless you are getting the 4ohm m80's.

You may want to look at the weight on those Qs8's, they are very very heavy for surrounds and need good support.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85