Voyager was another TNG spin-off that had more bad episodes than good but was still better than TNG (and at its best was the best series of the franchise, IMHO), which itself was a superior spin-off from the original.
This is where we disagree. I found Voyager to be the worst of Star Trek. It tended to solve problems through the power of technobabble much more than any other trek before, and had totally unlikable characters to boot. Captain Janeway - trying to be a female John Wayne didn't really work and her more authoritative posture attempts always made me cringe. Paris and Kim - bland, faceless characters without any character whatsoever. The Doctor - there was potential there but they ruined him as well with a bunch of stupid writing. Kes - oh how I celebrated when she left the show. Neelix - almost as bad as Jar-Jar; the less said about him the better. Tuvok - take Spock, remove every interesting thing about him and presto, Voyager's chief of security. Chakotay was somewhat tolerable but that wasn't enough to save the rest. No wonder they had to force a 3 sizes too small costume onto Jeri Ryan's body, fabric holding on to it's dear life, to get some of the ratings back.
And don't even get me started on the Borg kids.. Voyager had maybe 4-5 relatively decent episodes in it's entire 7 season run. That's a pretty bad ratio.
Of course, I find the entire Star Trek universe somewhat sterile, boring, and lame - but Voyager was definitely the worst of the lot, imo.
Oh, don't get me wrong - I didn't think much of it in general; it only had four basic episodes: enemy boarding, trapped in the holodeck, time paradox and crew members turned into another life form. It was generally poor, and Chackotays continual insubordination should have seen him airlocked while Kes, Neelix and 7of9 were so dull they had to give them bright colour make up and fancy dress outfits just to keep the viewers from nodding off. But the episodes where Voyager had collided with an ice planet and the crew had all died apart from Chackotay and Kim, who died in a future unauthorised mission to change the past and save the crew, Scorpion and the one where the ship was falling apart and the crew eventually realise they are copies of the real Voyager, made of some weird material on a planet from a previous episode, and are destroyed before the real Voyager can reach them were some of the best TV Trek ever filmed.
I really dislike TNG, though. It was so PC and dull, with everyone on the crew noble, incredibly highly educated and fearless - there were only a handful of occasions where any crew member had any character flaws, and they were always very junior ranks like Dwight Shultz and Michelle Forbes' characters. They even let a kid regularly fly the ship! Tactical decisions were made by the psychological councillor, and combat engagements were met by urgent staff meetings in the conference room because the Captain was too weak to make a decision to fire back without everyone else having a touchy-feely session first. At least Janeway was decisive and tough; ridiculous at times, but the best Trek commander yet.