Axiom Home Page Forums General Discussion Home Theater Looking for advice on a small setup

I am looking to slowly upgrade the Yamaha yht-390 HTIB I have set up in a 10x10.5ft room. I watch a lot of blu-rays on my ps3 and play lots of video games. I listen to mostly alt rock. The whole upgrade is pretty cost prohibitive to about $300-$500 per upgrade. I pretty much have 3 questions:

1)First thing I was planning on changing was the mains to a set of M2's. Do you think this will be adequate in a room of this size? In the end I was looking to have the epic midi 125 setup.

2)Was thinking about changing the receiver next to a Denon AVR 590 or a Onkyo SR507. Should I leave that till later and which one of those 2 do you guys recommend?

3)I have read several post on the brightness of some axiom speakers. I have some klipsch quintet sl speakers, are they as ear ringing as those can be?