Thank you all for your replies.
For now, I just went to Home Depot and got some wood screws and used the keyhole bracket. Much cheaper, and the wife is happy (once I hide the wires into the wall of course). Now the next step is to wall-mount the 50 inch Kuro, so I can set the center speaker properly.
I still like the BT-38, so I'll check them out later (I can get them for about CDN$100 here in Toronto).
Cristian