<font color='#000000'>Can't comment on whether the new model is worth $1500 more than the previous but................
As far as online auctions go. Be very careful. You will be spending a lot of dough and will have NO WARRANTY. No warranty on a $500 to $1000 receiver, not too big of a deal, but on a $4k receiver? I would hate for someone to get a brand new receiver and it ended up being one of those 1 in 1000 that's a lemon. You would then have to trust that the online auction site would give you $4K back. Maybe, maybe not.
Remember, if you don't buy a Yamaha from a authorized dealer, you don't have a warranty and in most cases Yamaha will not even work the receiver at your cost.
Anyway, I have heard that the new Flagship is amazing.
Just my .02 cents.
Shinerman</font>