Earlier you asked EP-600, or two EP-500's. Most would suggest two slightly smaller subs, are generally better than one larger sub. By showing an interest in the EP-500, you might consider the EP-350 as well. Two of these would leave you with plenty of headroom in that 2000 cu.ft. HT Room of yours.
There is at least one 350 in B stock right now for $626, in black oak (I see from your pics you have this finish now) call Axiom they may have two. In worse case you might have to wait a bit for the second one. At $626 x 2 = 1252 that's less than the price of one EP-500 (1270). That would leave you with just under $1300 for that new AVR. This would be only one of several options that you could consider. Good luck.
