Rick, many of the BR discs have a higher bit rate on the DD tracks so they should still sound better than dvd's, but you won't have to invest alot to get a better receiver to handle TrueHD etc. $400-$500 looks to be about the right price range.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70