One of the biggest things to hurt the Enterprise cast is Mayweather. I don't understand how after three Berman/Braga series they couldn't write good stories for the character of Mayweather. I've seen Anthony Montgomery act in other shows/movies and he is pretty good actor. Also in the early Enterprise episodes Archer and Trip always seem to be yelling at whoever they are talking to but this calmed down in seasons 3 and 4.
Overall I like Enterprise and Voyager, but at this time I think Enterprise wins on the merits of it's last two seasons. Voyager had the character of Janeway all over the place. The writers couldn't decide who Janeway was and there were times when I felt bad for Chakotay. Some of Voyagers stories were possibly some of the best Trek ever but the uneven character of Janeway hurt some of these stories. In my opinion.
Overall I like Enterprise and Voyager, but at this time I think Enterprise wins on the merits of it's last two seasons. Voyager had the character of Janeway all over the place. The writers couldn't decide who Janeway was and there were times when I felt bad for Chakotay. Some of Voyagers stories were possibly some of the best Trek ever but the uneven character of Janeway hurt some of these stories. In my opinion.