Another reviewer here says that SPYMAKER, the TV movie starring Jason Connery (Sean's son) is better. That's really a matter of personal opinion. But as a long-time James Bond fan and collector, not only of the films but of the original Ian Fleming books, I can tell you unequivocally that GOLDENE EYE is a much more accurate portrayal of the life of Ian Fleming.
Another major plus is that Charles Dance actually looks like Fleming, and manages to mimic his voice and mannerisms quite well, based on the archival footage I've seen of Fleming. Jason Connery doesn't even come close -- he was obviously cast because of his father's reputation.
If you're looking for a purely fictionalized fantasy, only loosely suggested by Fleming's wartime career, then you might enjoy SPYMAKER. But if you want the true story, I highly reccommend GOLDEN EYE. I also strongly reccommend the Ian Fleming documentary which is included on the special edition DVD of THE LIVING DAYLIGHTS.