Just got back from watching it in IMAX...
I loved it. The battle itself was absolutely epic and a blast to watch, even if the events leading up to it felt sort of like filler to extend the run time. I love all the army chants and sounds they make when the armies are moving, that shit gets me so pumped.
CGI looked iffy in some parts, specifically when characters were running towards something, it was sometimes obvious it was a green screen, but overall the CGI was great. People always love to complain about the CGI in the Hobbit but they never seem to want to praise some of the incredible work they've done.
Azog and Bolg look fantastic and Smaug does as well, even though he does not get a lot of film time in this one. The large scale armies are very well done and you get a very large sense of scale when the camera cuts all the way up and you see the fighting.
Disappointed they barely used Beorn...I mean really come on that dude is a bad ass! I understand it might feel a bit overpowered cause he basically just rips through the entire army, but I would have loved some scenes where the guy was just ripping people in half or some shit lmao...I know a bit graphic but come on...He's a freaking giant ass bear fighting orcs.
The love story thing between Tariel (something like that) and one of those killi/filli dwarves was a bit much IMO. Not a fan, I just wanted to see big ass fight scenes lol.
Overall, I loved it. Best one of the three easily, simply because I was really looking forward to a large scale battle and they pulled it off for me. I know people like to complain about the logistics and whatnot or oh no it's not true to the book etc, but personally I don't even care. I go into the film wanting to have a good time and see some epic battle scenes and I came out very pleased.
9/10 for me.