Well?
I have to say Series 1 and 2 are the best
Series 2 can't be beat 8)
probally 2 or 4 cause it has some favorite girls of mine
2 cause i like kari and yolie
series three for getting a bit more serious... but number one is my fav. (mimi fan!)
Season 2. Blackwargreymon and Flamedramon, what more do I need to say? Also, Yolei is pretty good too.
Season 3 is the best because it has one of the sexiest digimon
I like em this way
1place 1 season
2 place 3 season
3place 2 season
4 season I havent seen it jet
For 'hentai', I'll say it means M/F, then I have to go with season three, followed closely by 02. Why? I just like the Tamer's hentai pairings better.
Now, if it were asking about best yaoi season...