Six months in and I'm loving the M4. I just freshened up an old turntable and am listening to them right now.
Everyone's taste is different but these speakers really check all the boxes for me..
50 watts wasn't quite enough for them as they do like power. Im using a 100 watt amp with them now and it's more than enough.
I really like the combination of a sealed monitor and sealed sub. I have had a few acoustic suspension subs and I'll never go back. I was trying to avoid a rear ported monitor and these were the perfect fit for me.
I have a pair of Forte IV and several tube amps in the next room but I find myself listening to these M4 a lot. Especially if its a short listening session or TV. Silly to power up tube gear for an hour or so. They are that good.
My second system with the addition of the M4 couldn't have come at a better time.