I am in the process of getting some new speakers. The plan is to get 5.1 now, then down the road, move the front to surround and get some tower speaker for a 7.1 set-up. Eventually, when they are surrounds, these speakers will be wall-mounted, but for now there's nothing to mount them to. I am looking at JBL 820s for this purpose. Will book-shelfing them negatively affect the sound? Is this a significatn issue? Would there be advantages to using 830s instead beyond the mount? Also, for the center, I'm not sure if I'll ever be able to wall-mount thanks to an inconveniently placed window. Is the LC2 more expensive than the LC1 because it's a better speaker or just because it's wall-mountable?