From: Ol' Blighty
NO! Janeway was the worst captain ever! Voyager had it's moments, but was the weakest of the ST series IMO.
DS9 was a good series, but was a slow burner, you have to give it a chance.
If you're looking to watch some Star Trek, I'd recommend Enterprise. It was sort of slow in Season 1, Season 2 was a bit wonky, Season 3 was different but fun, Season 4 was very good (apart from the finale).
Of course you should also watch some Enhanced TOS. They did a great job touching it up. It's classic stuff.
TNG was the best series though for consistently good writing. Cant' beat that for good ST.
Janeway the worst?!? Voyager was cool, only problem was its cruddy ending, that was probably written in 5 minutes flat
DS9 was my least fav series, because for some reason the actors in that series really get on my nerves. Odo and that chief O Brian guy are both extremely annoying, the Doc is the most boring plain guy in ST, the Cap is okay but doesn't have a stand out personality like the other Caps, the only character with some... character, is that Ferangi dude. I know this will sound like Sacrilage to some, but B5 was way better than DS9
I've seen every episode of Enterprise up to where they save Earth, its a good series, don't know why it didn't have that good of a rep, the Captain is a great actor too.
"My body may be confined to this chair, but my mind is free to explore the universe" - Stephen Hawking