If your gonna move into a 6,000 cu ft room, the 5T's are not going to be sufficient. I would recommend the 6T's, but they have discontinued
them, at least I don't find them on the web site. That's to bad, because they would work in a 6,000 cu ft room. The Sierra's won't work
either. Driver(s) are too small.
I've been doing audio for many years. I could recommend other speakers I've had, but I would need to know exactly what you are
looking for in a sound signature......warm, neutral, etc. And do you want the speakers to be used mainly for home theater?
Home Theater/music ratio?
I've had everything from Klipsch LaScallas to Axiom to Sonus Faber. Do you want a "dynamic" sound like a movie theater,
(by dynamic, I mean in you face, efficient speakers, maybe horn loaded, like Klipsch, or Chase Home theater speakers
(although they are going out of business, Craig Chase will still honer any warranties if a problem arises). Usually IMO
most, not all, dynamic speakers are not that great with music. But you can try to find the best of both worlds.
I myself like a warm sound signature, thus the present Sonus Faber's. They sound great for music, and still good IMO
for home theater. I have tons of concert DVD's, SACD's. But that line of speakers are out of your price range.
That 6,000 cu ft room is huge. You are gonna need a hell of a sub or dual subs, to fill up that area. I can recommend
that also. But so can others. You have been given a few good alternatives to the Aperion's and Sierra's, but I'm
not familiar with those suggestions. And if I come across as a know it all, I certainly don't.
. Just trying