Ok, I'll stick my neck out.
(checks penis is still there)I enjoyed it. Like the OP I go fairly regularly to the theatre and even go to ballets and operas. I saw Cirque du Soleil at the weekend, me and the wife go every year. I have seen Les Mis on stage about 3-4 times and the film did not disapoint. If you're taking the missus make sure she has plenty of tissues. SWMBO was weeping from the outset.
As for performances they are all solid. Who would have thought that Russell Crowe could sing that well?! I thought he did a better job than Hugh Jackman, but that is my opinion. Sacha Baron Cohen is hilarious but the one who really caught my attention (and my eye

) was Samantha Barks (Eponine) not only was her signing fantastic she is quite a stunner as well. I was later informed by the missus that she was found on one of these talent shows that I refuse to watch.
Make sure you go to the loo before you sit down. It is as long as the theatre production and there is no interval. I never get the mid-showing urge to go to the loo but I was definitely ready by the end of Les Mis.
Django was very good although very violent in the way the Tarantino does best. Plenty of blood and gratuitous violence. Although I thought it was a little slow in places, nomrally he likes to keep you thinking and your mind occupied....not so much in Django. It tackles a very disturbing subject and although factually very correct the film mocks the seriousness of the subject at the same time. Which is the reason I feel it has received mixed reviews.
Zero Dark 30 was great. I can see why Congress are investigating the amount of disclosure of sensitive information the producers got. If you dont like seeing or watching people getting tortured then I would suggest renting it and fast forwarding the first 20-25 minutes.