In addition to Cartman's knowledgeable advice, I'd add Von Schweikert's LCR15's to your list. The reason I think these standmounts would make a great front stage, outside of sound quality of course, is that you have the added benefit of having the same speaker at all three position. Say what you will about center channels, but if you truly want a seemless front stage, ideally you should have the same speaker all the way across.

Food for thought.