I actually like Reborn, and sometimes they are actually funny. Reborn is awesome and how it has a great theme to it also. Battles are pretty epic and the art(in the latest chapters) is pretty good. I saw your anime list and it seems you are more into the slice of life/romance manga than the comedy action manga that reborn and soul eater and other mainstream manga are. The only mainstream manga i see that you actually like is one piece and that is not a bad choice.
Other manga i recommend are:
Defense Devil(Wonderful art, but story kind of side tracks a bit but its still good)
Bakuman(From the creators of deathnote, not the same theme though)
Ao no Exorcist(One of the most Amazing art i have seen by far, the story line is also amazing. Sadly chapters are updated randomly)
The Breaker(If your into martial arts, you may like this one. It's a Korean manga but is read from right to left like a Japanese manga. Art gets better and changes gradually but if you look back, art looks completely different lol)
The Breaker New Wave(It's a continuation of The Breaker)
Kimi no Iru Machi(AKA A Town Where You Live. I don't know i just got hooked on this manga)
Ane Doki(Same with the above manga)
Fairy Tail(Just an awesome Manga, I'm pretty sure its already pretty well known)
Gamaran(Time based on Fuedal Japan, battles are just, wow, i can't even explain, but the art isn't that good(Everyone has the same facial structure XD) but you will get used to it)
The rest is up to you. Just look around, if the manga looks interesting then read it. Me personally, read mostly Shonen manga. This doesn't mean its Jump though. I don't really like reading shojo manga b/c for some reason(To me) the art all looks the same.
Wow thanks
This is very helpful!
QUOTE(toguro_max @ Nov 21 2010, 11:31 PM) Since you're 13, I also don't recommend you reading Gantz. Netheir Berserker.
All mangas are read from left to right (unless it was mirrored, but it rarely occurs now).
I read A LOT of manga tiles, and a huge amount of'em is not suitable for youngsters, so my suggestion is the following ones:
Rurouni Kenshin (aka Samurai X) - It's about a samurai wanderer who wants to forget and absolve his own sins. There is lots of humor and action, a must read.
Love Hina - some may say it's ecchi (obsecene), but it's not as much, i think it's safe. It's about a guy who, after failing the exams 3 times, ends up on a feminine dormitory, owned by her grandmother. Then he ends up being the dorms' manager, and he must avoid the girls hostility towards him.
Mahou Sensei Negima - From the sme mangaka (manga artist) of Love Hina. It's about a 10 years old kid who dreams about becoming a great magician like his father and also finding him, but for this, his first "task" is to be an english teacher at a gilrs-only japanese school.
Card Captor Sakura (aka Sakura Card Captors) - It's more a shoujo (for girls) manga than a shounen (for boys), but it's light and really nice. Its about a girl who needs to find magical cards that were spread over the city which contains huge powers.
All these above i belive you can find on stores.
Now, if you want to read something form the internet, try reading Aqua and it's sequel Aria. It's a different view from the future and have no fights and no nudity at all. Just the days from a girl who wants to become a Prima (a kind of master gondolier).
I could strech up and recommend lots more, but i'm sure you already have plenty of recommends
Ps.: Shaman King, Death Note and Fullmetal Alchemist are great >-D