I would definitely want an M2 in white. Not the High Gloss White because I want speaker to blend in as much as possible with the ceiling (for me) rather than stand out. Oh, the $250 price bump would also deter that choice.
My choice would be between 'paintable' at a $35 price bump or
maybe the white maple w/ white grill because it is pretty white.
Has anyone sanded the standard vinyl and spray or brush painted it? If so, how did it turn out. I would consider painting it flat white as the ceiling is painted. If anyone has done this, please post some pics.
PS. Holy Cow. That looks like quite a sub you are building. Excellent craftsmanship!
