I'll watch any Bond and get something out of it but the ones I enjoyed in the Cinema and have nosedived since are LTK and TND. Both movies that I thought were amongst the best but have become less appealing since. LTK for just being tooo 'angry' and un-Bondlike and TND for being a bit of a noisy mess. Still don't mind watching them though.
The ones I never liked from the moment I watched them in the Cinema are DAD and QOS..although strangely QOS has grown on me a bit and now I enjoy it a lot more.
Of the older films (my first at the CInema was Moonraker)..TMWTGG sticks out as the one that I thought was great as a kid and now I can see its flaws and enjoy it a lot less.