I am trying to stay around $5k for all 11 speakers. I was actually pretty happy with the sound of the Def Tec after treating the first reflection point and getting the crossover setup to my liking on the Denon.
Whatever you do, make sure the speakers have proper enclosures. Those in walls, which are most, are just junk designs. I think most commercial in walls are highly problematic and best avoided, unless you don't care how awful they sound.
In walls, actually represent a huge design challenge, because of the large baffle from the wall and its complex reflections.
I have designed and built an in wall system for our great room, and it is a huge challenge. The only commercial in walls that look at all promising are B & W, but I would still be cautious. I would not go that route unless you really have to. Once you install it there is no easy going back.
This is the FR of a main speaker on and off axis, you can see the reinforcement of the wall in the 100 Hz range is hard to deal with. Although over all you can see it is good on and off axis.
Black is axis, and then 15, 30, 45 and 60 degrees off axis.
This is the sub FR. Crossover set to 80 Hz.
Again you see the influence of the wall at 40 Hz.
As you might expect from those measurement it sounds very good, but the wall does color the low end response a little.
That is my wife's system and she loves it. It was built on her request.
So not the most perfect FRs, but the commercial manufacturers generally don't dare show theirs.
Then there is my room, but that's another story.