Personas....7F vs 9H


Thinking about one of these speakers. And looking for advice/thoughts about why you would prefer one over the other, suitability in a 18 x 18 room with high ceilings, etc. Have heard the 9H and was impressed. Aside from the room correction and built in amplification, and the benefits these should give, is there a difference in their sound that would cause one to be preferred over the other?

Thanks , 
Brrgrr
brrgrr
ARC in just the bass section and not touching the mid and tweeter at all = much better and far more flexible.  9H is also sealed, has two more woofers, beefier woofers, different cross over from mid to woofers, etc

The $10,000 upgrade ($8,000 or less during the promotion right now) is dollar for dollar a steal of an upgrade.
I'm just waiting for someone to come along and tell us how much better Vandersteen speakers are, how flawed Personas are.