Easy install, or at least they designed these as best as you could imagine.
Versatile response obtainable using the trebble and base buttons.
Good looks with or without speaker covers.

none that i know of

I installed these in a 5.1 system and built custom MDF boxes into the wall and then redid drywall. They sound very good. I'm still a little confused as to the frequency response that results when using either of the toggle buttons on these speakers, but it is a nice feature since I have a lot of bare reflective walls. So I have the bass button depressed to reduce bass I guess. Installation without boxes would be a cinch for sure. Very happy with these, look seamless with room. Speaker covers are pretty heavy, but don't seem to affect sound so I keep them on. I would love to have some real info on what those trebble/base buttons do!