I did watch 9 for the short time it was on, but I preferred Voyager because of the overall theme. I didn't care for Voyager's first season because Kate Mulgrew, being the first woman captain on TV had to try too hard to be relevant. Her acting was subpar and you could tell she was trying to be too tough, just to prove a point. The writers and director must have noticed the same thing, or people were writing in and complaining, because season 2 was completely different. She was a very decisive captain but began showing compassion and heart, much like Patrick Stuart in NG. It actually evolved into a very good show by the end of season 2.
Now, "Enterprise" was a POS. Scott Bakula just plain sucked and I watch a total of three episodes.