I can't personally recommend any of those... anyways, is there any way you can mount drivers inside the walls instead of inside the ceilings? I feel that ceiling mounted speakers just sound "off" because of where the sound is coming from and aimed towards. Installing it in the wall and aiming it towards you instead IMO, will be a more optimal approach.
I also don't think you should bother with four... two good ones, plus a subwoofer, should cut the mustard so to speak. These:
http://www.usspeaker.com/radian 512-2b-1.htm
will work well in a ceiling install. 120 degree dispersion pattern.
For in-walls, you can (and probably might want to?) narrow the dispersion a bit, so I recommend these:
http://www.usspeaker.com/B&C-12CXT-1.htm
instead
If you can jut it out from the wall a bit and aim them to "cross fire" a few feet in front of you, results should be optimal. I think you'll be pleasantly surprised at how good these really are if you set them up properly. It'll also save you some money because I doubt that you will be happy spending $2000 only to all the problems associated with typical ceiling style installs especially with four sources of sound competing for two channels.
You don't "need" to toe them in but it will change the presentation positively.
Either way, both of those are some ::high quality:: speakers. With the money you save, install some subwoofers - it's well worth it. For example
