Definitely the best of the three Craig films that we've seen so far. Stunning cinematography, especially in the Shanghai fight, and it has a good mix of realism of Casino Royale with some of the fantastic natures of the Bond films. (Quantum was probably too realistic, and Bardem's Raoul Silva is just right. I'll be hitting a dead horse when I say his motivations are more intimate as opposed to older Bond films but he really was a great villain)
I just really thought the action was a lot better compared to previous movies as well, especially the opening Istanbul chase. It will probably never eclipse the opening parkour scene from Casino Royale but motorcycles, trains, construction vehicles, it was all sensational.
I really do enjoy Mendes's take on Bond. The whole aging Bond thing is great and pretty interesting. We've had a Bond in love, vengeful Bond and a Bond facing inadequacy and obsolescence, and I definitely how enjoyed intimate this story was. Even moreso than the Bond-Vesper storyline.
With two more movies for Craig, I hope he can continue to deliver. Hell, I hope Mendes comes back to direct the next two movies.