Anything released by MGM is pretty appalling, and they have also stripped them of all extras in most cases. Fox BDs are very variable indeed. Online review sites are very helpful in this regard.
Watching 'Rambo' as we speak.........Neither picture nor sound are anything to write home about. 'Wanted' on DVD was better in both regards. 'Rambo' is probably the quietest Blu-Ray movie I've seen too.
I've mentioned this in another thread but in my collection BRAM STOKER'S DRACULA and T2 are both a waste of time on RAYS OF BLU as they are no real improvement on the dvd release.