There was a time about ten, fifteen years ago that I loved James Bond movies, but I have seriously outgrown them. My fave 'Bond' movie would be the Bourne Identity (loathed the sequels).
Of the Bond film proper, there are only two that I can choose to watch at anytime. Licence to Kill, closely followed by The Living Daylights. Dalton gave Bond a human face, an emotional vulnerability that was very appealing, but still had a hard, sinister edge that Lazenby lacked. Connery played him too much as an infallible bad ass, while Roger Moore's Bond swiftly degenerated into parody.
#1 Licence to Kill
#2 Living Daylights
#3 and only because I have to choose, Live and Let Die. It was the first Bond movie I ever saw, and I have a nostalgic fondness for it still. I also have a liking for The Man With The Golden Gun, and if these two Moore movies are on TV, I won't change the channel.
As for Connery Bonds, I can watch From Russia With Love, Goldfinger and You Only Live Twice with no reservations. For some reason I quite like Never Say Never Again, although I have never been able to justify that.
I can't stand the Brosnan Bonds, although he had the potential to be the best of the lot. The films were stupid though. I saw all of them in the cinema for my sins, and the minute I saw him dive off a cliff on a motorbike, after a falling plane, defy the laws of gravity, catch it, climb in, get to the controls and fly away, I knew that the Brosnan movies would be even more full of unbelievable parodic bullshit than the later Moores were.
I haven't seen Quantum of Solace yet, but what I saw of Casino Royale was a movie that wanted to be the Bourne Identity. I didn't recognise any of Bond in it.
Disclaimer. I've never read any of the Bond books, started Moonraker when I was 9, disappointed at the lack of space shuttles, stopped reading after page 50.