To restate my views (if anyone cares).
In order of preference:
The Next Generation
Deep Space Nine
Voyager
Enterprise
The Original Series
Yes, I hate the original series. Well, perhaps "hate" is too strong, but it has dated badly.
And yes, I know that they're relaunching it with updated special effects, but that will just make the rest of it look even more dated.
That said, I think that I prefer the films to any of the series; certainly, the films are the only ones I have on DVD (so far). And The Original Series crew is great in the films, so don't think that I hate the characters
.