THX
Just want to make a little editorial comment here, since Patty brought it up (but not in any way directed towards Patty). 'THX Approved'. While this may impress clients to see that logo, don't let that influence your decision on speaker or other equipment purchases. At one time 'THX' probably meant something towards the quality and/or standards used to make a particular peice of equipment, but nowdays, it's just a marketing thing. Companies pay good money to have 'THX' approve their product, and it says nothing for the quality of it. Plus, because your piece of gear has the 'THX' logo, it will now cost you more to purchase it because it's costing the equipment maker more to put that stamp on it.
If I had to venture a guess, I'd have to say that at least 80% of the equipment out there is already designed to meet or exceed the specs that 'THX' has laid out, and all your paying for is a logo. Let the buyer beware.
End editorial.