Any other Infinity MTS owners out there?

I own a pair of Infinity MTS. The multi-driver system really allows the texture of the sound to come out. Of course the sub-woofers with their own amplifiers are very nice, allowing the speakers to be easily driven by moderate power amplifiers. One cannot argue about bass performance with sub-woofers instead of just regular woofers. The RABOS calibration really works. You are right about them being cheap. In their hay days, these Class A (rated by Stereophile) speakers actually cost over $10,000 however. I did look around at speaker options a few months ago, just to see if mine is outdated from the sound quality perspective. The Infinity MTS actually edges out Wilson Audio Sasha/Watt Puppy in my opinion. So yes, the Infinity MTS is for keep.

Yes, I love my Infinity Prelude MTS speakers driven by a pair of Wavelength Cardinal 300B monoblocks.

I'd love to hear the Sashas myself. I've always been impressed by the build quality and sound of the WP's. Must admit, it's tough to believe the MTS outperforms them without taking price into account?