I need to point out, again, that even though the v4 M3, M50, M5 and M100 aren't as excellent as the active LFR1100s (see above), there are no flaws. Ditto for v4 subs, QS10 and VP160. I cannot say that about the v2. The v4 are examples of as good as you can get with the chosen technology and architecture. The quality, in all aesthetic, functional and performance respects is exemplary (with the exception of the fabric grills but I like them naked anyway). We shall see if I perceive any flaws with the M2s I'm receiving on Monday.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated