Concerning the M22 on-wall. I've used both these and the bookcase M22's. I have the in/on wall VP100, but it doesn't make a good comparison. The M22 on-wall have good mid to high end, but seriously lacking in the bass department. The only way I liked them with just the M22 on-wall and the EP350 was to run the M22's as Large without a crossover cutting out any of the bass. Using an 80 hz or higher crossover made them sound even thinner.
Now, having said that, they are good quality speakers, but you really have to play with all of your available settings in order to get the sound that you want. After I did all of the above, I added the bookshelf version back to the mix for a composite sound of both of them together, using 80 hz crossover. This provided a much more pleasing sound to my ears and to visitor's ears.
