Well, I've had the M22s for over seven years now and remain completely satisfied(the actual mid-range in particular is outstandingly good). I use them with an EP500, crossed at 80Hz, and get outstanding bass down to a bit below 20Hz, which is great for my classical music in general and pipe organ in particular. Incidentally, although the EP500 has an edge in the lowest bass, in the mid-bass area the EP350 should be essentially the same, so you might look at the EP500 graph there.

-----------------------------------

Enjoy the music, not the equipment.