The plus points of a 'normal' speaker package is that you have the ability to move them around and place them where you want, so you'll be able to get the best from them, especially music. In-wall doesn't have that advantage, but obviously look a lot neater! I suppose the 8NT's will be as good as an in-wall you'll get as far as music is concerned - unless you spend silly money of course! The B&W's will work fine with the Denon A1.