Alan speaks the truth.

You could do far worse than an Energy + Axiom pairing. For several years I had a system that consisted of M22's, the VP150, and Energy Take 5's as rear surrounds. I had no complaints and was quite pleased with the setup. The timbre matching was close enough that I never had a problem.

Good luck!

M80v2 | VP150v2 | QS8v2
SVS Pci+ 20-39
Emotiva UMC-1 & LPA-1
M22ti + T-Amp, in the Office