Concerning the L/R/C, I would use the boxy versions and wall mount them, if possible, or go with a tower version, before I would use any of the on-wall varieties, because they do give the extra edge to better sound quality. But, if that's not possible, then the on/in wall or on wall would be my second choice.

https://docs.google.com/spreadsheet/ccc?...amp;usp=sharing