Voyager and Enterprise, as a concept were excellent, the execution was mostly terrible.
I thought both shows are still enjoyable. I'd watch Voyager and Enterprise over any of the new Treks any time. They had plenty of issues, but they were fun shows.
Voyager suffered from being a PERFECT setting for a more long-story format show... not so much for an episodic show. If they were able to get rid of the reset button and make things actually matter, Voyager gets alot better.