Two part answer...

1. No experience with the in-wall M3's but I've been really impressed every time I listen to the regular ("full-fat") M3's. I have sometimes wondered if the smaller enclosures of the in-wall/on-wall M3's translate to needing a sub but unfortunately never tried them.

2. In my experience a trip up to Dwight is always worth it.


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8