I prefer Shonen Jump more then Clamp. Shonen manga and anime is kick-ass and totally epic, like Dragon Ball and Naruto. Clamp is quite boring, and focuses on Magical and Romance stuff, like Cardcaptor's and Kobato. Shonen has all of the action, adventure and fighting in it, while Clamp is mainly Romance, Magical and other stuff. So I prefer Shonen Jump more then Clamp, due to the badass scenes and fighting in it. I like some Anime and Manga from both sides though.

I don't like Shounen that much (More into Seinen) but I ADORE CLAMP. Chobits and xxxHolic are two of my favorite manga series overall. <33

Shonen Jump was my beginnings, but I've since moved on from it, though I'm still caught up with most of its series. However, Tsubasa Resevoir Chronicles and xxxholic are part of CLAMP. Frankly, that is no contest. Both are among my favorite manga that have been completed, and the epic depth it all goes into is fantistic. Put next to TMnI and Type-Moon, CLAMP has created one of the most interesting universes I've seen from multiple perspectives (series).

@Katherine and silverexorcist: I both get what you mean, but I much prefer Shonen. I am never really into Clamp manga and anime. I only like a few, such as Chobits. Shonen has all of the Fighting in it, and I think that many action anime fans would prefer it more then manga and anime produced by Clamp. Just telling you guys a point.

Naturally; I doubt there is any person who is a fan of fighting anime and manga who would prefer CLAMP over Shonen Jump. It's a simple matter of interest. CLAMP would bore most of the people who are only interested in the big series, like Bleach, Naruto, One Piece, and so on. On the other hand, there are those who dislike shonen manga, considering it shallow, predictable, and an obvious guy choice. Both are right, if you ask me. I just happen to find the series in CLAMP more interesting than Jump, though I still love One Piece and Fairy Tail (mostly), while the others have...deviated from their path. If only Bleach and Naruto had remained true to their roots...that problem just serves to disappoint me and my interests.

Shonen Jump is full of problems, but I still prefer it. I suppose it may be due more to what I've chosen to watch and read principally coming from Jump, so it's probably heavily biased, but One Piece impresses enough o put it over for me.

Dont think I prefer one over the other. I enjoy them both the same.

I like them both well enough. Firstly, I love One Piece, so that's one point towards Shonen Jump. I don't know what the anime like Angel Beats and K-ON and others like that come under, but if it's Clamp, then I would pick that, because those are two of my favorite anime.

I adore both of them. <33 Animes under those two actually were the first few animes I've watched. But I still have got to say Shounen Jump because, well, my first and second favorite animes (Katekyo Hitman Reborn and Naruto/Naruto Shippuden) are Shounen. :P