I have some M22Tis which I love.

Now, for "surround" speakers, is it better have speakers that match your front ones (i.e. buying 2 more M22) or is it better to get the special surround speakers that Axiom makes.

Also: I was going to buy the EP-125 sub since I have a small room, but someone said to spend the extra for the 175 because they're a better "accoustic match" for my M22s.

Is this true? I don't need mind thumping bass, just good clean bass to fill in the M22.