There are many chioces out there,but I would look at the following manufacturers: PSB,PARADIGM and Totem. They all produce excellent in wall designs. As in wall speakers are a compromise in sonic performance to utilize a clean look to an installation, the decision on where ,how to install is a critical decision. When I look at some installations using in wall speakers,I just shake my head;wrong heigh,wrong angle,etc. and it just does not have to be this way. The easiest decision is the rear channels. Use for speakers with two at the back and two at the sides. Do not use anything greater that a 6" mid and 1" tweeter as anything more is overkill. The fronta and centre are a little more problematic,and you should use the services of a reputable consultant in your community. Believe me if you make a mistake fixing it is very difficult once the speakers are in the wall. I have done many of these and have spoken to many nmanufacturers about in wall installs. Many of the manufacturers make pivoting tweeters to better focus the image[you can move the angle of the tweeter to "hit " the listener]. Do some research with the manufacturer you decide on on the best speakers in there product line for your particulat needs. PSB who make in wall speakers,produce models with two 61/2 inch mid/woofer, and One 61/2 woofer. I contacted the manufacture and a rep. advised me that the less expensive single driver would work better. More is not nec. better. Good luck.