Those both look like good options, and I'm likely going to pick one of those sets up after Christmas myself. From what I've read, the BT77 is very secure, the recommended way to mount is with a screw through the bottom of the mount/speaker. Some people have successfully bypassed that step and simply tightened the sides down, but for your fairly big/heavy surrounds I would recommend following the suggested directions and screwing into the bottom. Likely wouldn't be an issue for resale since I don't think people would ever see the hole, on a stand or mount.
My 2 cents.
Saw your post in the "justify your systems cost" thread, good to see another young guy (I'm 22) with a good head and some morals.