Each film presents a different flavor of Bond, whether comedic or serious. That's one of the things that keeps it fresh.
As far as the "best" film is concerned it falls between FRWL or OHMSS.
My favorites (in some kind of relative order..I love them all.)
LALD, FRWL, OHMSS, Dr. No, Thunderball, TLD, Goldfinger, TSWLM, YOLT, TMWTGG, Moonraker, DAF, LTK, FYEO, Octopussy, AVTAK, GE, TWINE, DAD, TND.
I pretend the reboot, and Craig as Bond never happened. Like Indy 4 and Mad Max 3.
My favorite Bond changes depending on my mood. I flop between Moore, Connery, Lazenby, and Dalton.