Some friendly advice, Seth.
Be careful with this hobby. Learn to separate real, needed, performance impovements from cutsey little features that offer marginal (at best) changes/improvements in sound or convenience.
I can't see trading in (note I don't say "upgrading") simply for weome featureasthat don't really make an audiable difference.
Now, if there's a quantem prefoermance upgrade that's another story but, aside form DD, DTS and perhaps DPLII, there's not really been a heckuva significant change in the market.
As long as you have adequate power and your I/O is in order, what else really matters?
but, hey. it's your money. IMNSHO, I'd put any excess money in a money market for when you get old. Gotta love that compound interest.