Check out reviews on audioreview.com. They are very favorible and a solid 4+ out of 5 stars. I am very satisfied in using these as A/V speakers. They are a lot better than I thought they would be. Superb value and readily available on used market place.
I've used them for my home theater rear speakers and they were excellent. I recently switched from home theater to stereo and have them for sale. They're the SuperOne XU (with removable wall bracket) I also have nice telescoping stands for them.
I use these as rears myself and have to say for $300.0 you won't get much better. I wouldn't use them as fronts for home theater or two channel music, but as surrounds they are more than adequate. I drive them with a Sony ES 777 at 120 watts per channel and they hold up just fine.