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I think the Love Hina Anime scored higher than the Negima animes. However, I prefer the Negima Manga. Likely just personal tastes. I will admit that before I make a 'final' judgment on it I'll need to wait till it finishes. Anyways both are great, but I find Negima to fitting my tastes a bit more(or even that I just prefer the character's... Negima's cast is large enough that just about everyone should have a character or two that they particularly like).
*Note: I don't recall all the ways in which the Del Ray manga differs, but I don't much like their translations of it, I prefer the scanlator's translations for the most part(though some of them make me a sad puppy); anyways because of this the Del Ray manga may make somethings appear slightly differently*My friend lent me the manga. It's reasonably interesting but nothing really stand-out, and the heavy fanservice involving overdeveloped 14-year-olds who are all in love with their 10-year-old teacher isn't exactly my thing.
It didn't really strike me too much as all of them being overdeveloped. There are some that way, but I have seen 14 year olds quite developed irl from time to time so it is no big deal with me. There are some that are underdeveloped for their age physically(the Fumika twins are the easiest example). Basically they have a range of builds which would make sense in a diverse class.
I really must wonder how much you have read that lead you to state "14-year-olds who are all in love with their 10-year-old". There are actually very few with such intentions toward the poor guy. Most of them just like playing with him in a way that would make any guy cringe.
I could probably list the ones in love with him. But some complications arrive that make certain characters debatable *Cough* Asuna *Cough*