There actually is an M series thread:
Sire M Series Bass Club
It has gotten less traffic in the past, maybe that'll change. As a result M series stuff gets posted here too for more eyeballs. I think posts can go both places since this isn't exclusively a "V7" thread.
I hope to post a few pics later or tomorrow. Lighter weight, flatter fretboard radius, the satin neck finish and seemingly pretty thin neck, and the variability of the pickup selection switches are the first couple of things that caught my attention in the five minutes of handling it I had this morning. The neck seems very negotiable-- comfortable to play and move on.
Not sure I am excited about the maple top job they did with my brown bass, the flame seems to be non-existent in one area. I will solicit your opinions, it's not terrible, but after all this anticipation I am expecting a lot in every department, maybe too much.
@roccobass 's finish seems nicer to me at this moment, but of course all assessments are subject to change as I actually get to spend time with it . No opinion as to tone yet since I had but a few minutes at very quiet volumes to play it.