I agree that towers look better for fronts. Especially the LSiM's. They are damn sexy. The 707's are a very DEEP speaker, so make sure you have room. The 705's are a much more manageable size. Like I said, in terms of pure performance, I like the 707's, followed by 705's, followed by 703's.... but all you're really talking about is differences in bass.
The best setup would be towers PLUS dual subs... but if you don't want to spend the money for towers AND dual subs, then the 703's plus the dual subs will blow the towers on their own away! ESPECIALLY in a home theater setup!
You can get some nice looking stands. They grew on me big time.