Here's one of the latest pictures of my Axiom Audio speakers that I have, minus the EP350 sub-woofer off to the side. I'm one of the regular members of the Axiom forums for the past couple of years. This is the first I've seen this particular thread at AVSFORUM, and haven't read all of the messages yet. My original design was with the 2 on-wall M22's to the side and a matching VP100 below. I liked the sound of the bookshelf speaker much better, so that's why I've incorporated their use here. This setup may not look the best, but it gives the best sound quality overall.
For mains I use a dual pair of M22's. 2 bookshelf and 2 on-walls. For center I use an VP150 on/in wall below and an M2 bookshelf above.
I don't have any surrounds. This is a 3.1 system, powered by a single 2009 Pioneer Elite VSX-21TXH.
The only other speaker's I've had personal experience with was a Sony HTIB in Early 2000's, and a pair of Bose 901's from mid 1970's.
My personal thoughts on the Axiom experience with these speakers are as follows:
Concerning comb filtering, I have walked around the room extensively with a Radio Shack audio meter. I have not noticed any comb filtering with the bookshelf speakers, but with the on-wall M22's, it is rampant. I get a different volume reading while playing a steady tone just moving the meter an inch at a time. The bookshelfs and towers are the companies main speakers, and the on-wall versions are for looks only to satisfy customer demand. Any evaluation should only be done with the bookshelf versions, IMO. The on-walls are a bit brighter than the bookshelf designs.
My opinion of these are they are an easy speaker to turn the volume up with and the brightness will appear on higher volumes, as will all other frequencys. To compensate, I adjust the built in equalizer in the AVR to cancel out some of the brightness. This is an ongoing project, so I don't have what I would consider audio nirvana, but the sound quality is improving.
Overall, I'm extremely pleased with these speakers. The detail is just breathtaking at times. I never tire of putting in a new CD and listening to them. Lately I've setup so I can stream Netflix, etc and I've just discovered Pandora. I was expecting low quality streaming, but instead am impressed with what I'm hearing even from that source.