I really dont think going from a 919 to a 2065 or lx-52 is going to see a big upgrade.
I was in your position about 2 weeks ago, and after many posts and talking with dealers, I bit the bullet for a SC-LX72. yes I know its a lot, but TBH Its a big upgrade.
From what others have said to me, your amp is great, which I had the VSX-819, and I wanted a night and day difference, and the only way I was going to get it was to buy a Amp that is over 1000.00 so opted for the RRP SC-LX72 which was 1700.00 but got it for 899.00, SO SO Glad I did, its amazing
But what I cant understand from your post is this:
You have the stuff to go 3D, why buy a non 3D amp?
If 3D does take off in the near future, then why spend 600.00 on a Amp when you will only want to buy another.
I for one, could care less about 3D.