I didn't mind AVTAK. Moore's age aside - Walken was excellent and I enjoyed the finale a lot more than other Bond films.
Brosnan is probably my least favourite Bond. I loved Goldeneye and really did have high hopes, but every film got progressively worse and Die Another Day was the worst Bond by a country mile (yes, even worse than Moonraker).
From Russia With Love is my personal favourite. Fantastic story, some superb individual scenes (the fight between Bond & Grant on the train), Daniela Bianchi (Tatiana) was a beautiful Bond girl, Rosa Klebb was a great character - as was Kerim Bey who you really warm to.
I also have a soft spot for The Man With The Golden Gun as I thought Christopher Lee was superb (plus who could dislike a film with Maud Adams AND Britt Ekland in it at the same time?). Saying that, I appreciate there are more solid Bond films in terms of storyline out there.
Casino Royale was absolutely superb and although the other Craig films haven't hit the same heights (I'm off to watch Spectre this weekend so can't comment on that), they remain at a very believable and watchable level. Plus I love the Bond books and Craig's representation of the character is the closest to the books IMO.