John, 2,3,4,5 has been done to death. The rest do seem to resemble coffins on 'paper' (Ok, on screen).
#8 has some interesting merits in my mind, but looks inherently 'unstable'. Weather that's perceived, or for real, I don't know. If these will be placed near side walls, wouldn't you gain LFs if the sides are perfectly verticle, almost 'flush' with the walls? The curved examples may have that wierd wavefront thing going on between the side walls and the non-straight walls; like a fat man squeezing himself between two close objects. You know.
I thought you were going to do a multiple driver set-up?

Didn't I read that somewhere? Something like (3) 15 inchers?
If this is the case, how about (2) on bottom, one on top. Pyramidal like.
Bob
( I just found the thread where you stated a (3) driver baffle, are you building (2) rigs )? Or changed your mind?