Before my v4 system, I was using the M80, 150 and QS8 v2. The high end on that system was brittle and sounded harsh. V4 is a different ballgame. It's very airy, light and dispersive. It can also go louder than the v2 before breaking up. Mostly the difference is in the v4 tweeter with its slight tapered horn, longer throw and die cast aluminum faceplate.
Having said that, there are two people I know of on this board who prefer the v2 tweeter over the v4. One likes his M22v2 better than the v4. The other may start coming around to the v4 sound.
The v4 sound is seductive and very balanced right across the whole audio range.
The only thing dual mids and dual tweeters will do is allow the speakers to go louder with less distortion - and maybe disappear less better. I really don't think you need any louder than M60 or 660.
That's a great tune. I'm listening to the re-mastered version on the M5OW in my living room and the air around the cymbals is very nice! No EQ whatsoever. Such air didn't exist on v2. It was more grainy.
https://open.spotify.com/track/6RvJigkrHaxStGN2shMJ7h?si=vlQdtNFnTqe1btMlbs3RdA
