Couple of quick impressions --
INDY 4 looks as good as it can on Blu-Ray -- but I hated Janusz Kaminski's stylized cinematography, which is at odds with all the prior movies, and as much as I loved Raiders, Temple of Doom & Last Crusade, the movie is a total mess IMO. Overall though it's a solid Blu-Ray, the sound is terrific also, and the extras are OK, but are mostly promo filler about how great the movie is and such.
THE STRANGERS is a BD25 and looks and sounds terrific. I personally disliked this one also, but if you're a fan, at least it gives you both cuts of the movie. No real big extras otherwise though.