Why spend 2000
FOCAL Chorus 814V 716v Dual 6½ Floorstanding Speakers Gloss Black Pair | Accessories4less
never heard them but Focal makes good stuff, I have heard a buunch of there bookshelfs and a few towers but not these....
I own a pair of these with sw300 subs next to each, I like them a lot to be honest with you, I would imagine they sound better than the foculs judging by what I heard...
http://www.musicdirect.com/p-15535-wharfedale-evo2-40-tower-speakers-pr.aspx
Since you are using a sub I would stay under 8", I like the sound of the 6.5's for some reason, its tight and efficient...
If you dont care about sales, my list of stuff to compare would be
Wharfedale diamond 10.7's Heard them they are serious for $1300 shipped...
Focal 726v {I heard these for a short listen in Boston about 2 weeks ago, initially impressed, would like more time to listen with some female vocals, maybe some Amber Rubarth to test them out..
Your avr should power all of them fine, not positive about the 726v's but I think their sens is over 90
Not sure what kind of music you listen to, and I know they are under your budget, but my favorite pair of speakers I ever owned and still own are the Tekton Lores, but its a different kind of sound, I love them for female vocals, live music, jazz, classic rock, ect... But R&B, Rap, and stuff with "fake bass" doesnt sound good through them... But something with Clarence Clemons's horn screaming and Bruces raspy voice belting away is just perfect, Ive been to a bunch of Springsteen concerts and it brings it all back...
Anyway them are my picks, there are tons more in your price range, that is a great range... Maybe narrow it down by committing to a size, style, ect..
I was jumping to the conclusion you want towers since you are getting rid of a nice set of Bookshelfs.. but if you want bookshelfs check out the jade 3's I had a chance to spend some time with them , and they are amazing... But a room your size, with your budget, towers will be a better choice..
If it were me for $2000, I would by the sale focals or Wharfedales {either the evo40s or 10.7's either way you cant go wrong} and add either an Emotiva XPA2 $800 600watts or 2- outlaw model 2200's $674 400watts amp...
Or a pair of these if they have any left
http://www.accessories4less.com/make-a-store/item/BOSVS336BB/BOSTON-ACOUSTICS-VS336-VS-Series-3-Way-6-1/2-in-Tower-Speaker-Black-Each/1.html with the 2 outlaw mono blocks would put your just a little over budget, but that big room of yours would be full of music for sure...
I obviuosly bought the evo40's and xpa2 so you know what I would do, I did test the diamonds and the outlaw monos in each setup and the EMO/EVO setup won... Plus I got a great deal on everything...