I loved Season 2 and 3, something I would have never expected, (my favourites being Pandora Boxx, Raven, Yara Sofia, Raja, the fabulous Carmen Carrera and of course Shangela, probably the funniest of all).
I've watched the first episode of Season 4, but I'm afraid I don't find the queens attractive nor fun. Should I go on watching?
in my opinion, the season 4 was the best of all. Looking at forums, many people like season 4 the most as well. It was very well done, very diverse in terms of contestants and challenges and introduced many memorable queens... Season 4 was also the breakthrough season that made Rupaul's drag race widely known to audience outside of drag/gay society with many celebrities discussing it on social media. It was that good...
My advice would be to definitely watch season 4, however, also watch untucked after each episode, otherwise you will miss out a lot about behind the scene and you will not get the a lot of things... (first time i watched it without untucked and didnt understand the fuzz behind Jiggly that other queens were complaining about)...
I've just finished watching Season 4 and you were right, I loved it! I would have probably preferred Chad to win.... but all in all I agree with the final choice.