After extensive research in an attempt to replace speakers my wife wanted removed from my family room (she wanted no speakers out - anywhere), I turned my attention to in-wall speakers and began wondering what type of price I would have to pay, or better yet, what compromise would I have to make by making a concession on the price. I chose these speakers after listening to them in another store.
First, the installation was a breeze. Yamaha provides a template for sheetrock cutout - actually providing 2, one for each speaker. The speakers easily clamp to the sheetrock, giving a firm, tight feel. I recommend stuffing the hole with some fiberglass in order to ensure you don't lose much sound in the walls. I wanted my speakers the same color as the walls, so I had to paint them. If you want to paint these, don't forget to sand them. They stipulate the speakers are paintable, but they don't really paint well, even with decent buffing.
As for the sound, for the price, these are very good. They provide a midrange/bass crossover on each speaker. I have them mixed with a Yamaha center channel, and 2 different variations of Polk Audio in-wall speakers. The provide a very crisp sound, but not quite as detailed as the Polk Audio speakers. Some of this could be due to the need to further tweak things, but I believe this is just a slight difference in quality.
Pretty good speaker for most audio needs.