Once I'm done with 6000, I'll continue with JoJo Part 2. I stopped at the end of the second volume, so I guess the best is yet to come.
Yeah, I wouldn't judge the series based on Part 1 and early Part 2. Part 2 gets epic when the true villains arrive, Part 3, well, I don't rank it among the best. People tend to love it though, so I guess it comes down to personal preference. It does help Jotaro, main character, is a bad ass though.
Part 4 is great, but terrible scans and translations destroy a lot of the experience. It's why I'm personally waiting for the anime to cover it. Who knows, it may even rank in my top 3 once it's done.
Part 5 is my personal favourite. Really love the Italian setting, plus Bruno Buccellati is my favourite character in the entire series. The story is pretty interesting too, and even though some of the translations are messed up, you get the over all jist. So hyped this is getting animated. Still, a few fans aren't too big on it.
Part 6 is just great, plain and simple. A few hiccups here and there, but it's almost unanimously loved by the fans. Really nice cast of characters, both new and returning, plus the ending is crazy, even by Jojo standards.
Part 7 is cool, but it puts weird emphasis on "spinning", as in "rotating"... I dunno, but I always found that strange. Some great scenes though, and Gyro, one of the lead characters, is epic. Also, the artwork is some of the best I've seen due to the new monthly schedule. You can tell Araki puts a shit ton of effort in.
Part 8 is amazing so far, and shaping up to be one of my favourites. The artwork is jaw-droppingly beautiful, characters are unique in both design and personality, and the story is hella' addictive.
That's just my personal opinions though. It is a shame such a great series suffers from shitty scans and translations, especially on some of the better parts. The anime is literally a god-send. Hopefully that and the new game will peak even more interest, and get the recognization in the West it deserves.