Idk. Nowadays, it's so hard to find something unique lol. If you want to, perhaps try something out of your comfort zone? :/ (Looking at your list, you read shounen mostly but that's due to something obvious >.>)
It's kinda hard to not have a list full of shounen nowadays as most of the popular mangas today are pretty shounen, or "shounenesque" (can I use that as a real word?)
Maybe Katekyo Hitman Reborn!? I mean, it's one of those loooong shounens (if you doesn't mind them) but the whole concept of being the candidate for the mafia boss is something i haven't seen before (but you must survive through the first 7 "introduction" volumes).
My friend recommended me this one, but I kinda don't want to read 300+ chapters -_-
And... did you read Fruits Basket? (you probably did, but whatever ;D) - my all time favourite with a really unique plot in my opinion ^^
I did, thank you very much for bringing that up , and it is probably one of the more interesting shoujo that I have read, but not one of my favorites.
Also, thanks to you guys for responding so far, I promise to get to reading your suggestions!
it is time for SUPER AWESOME TIMES!! WOOT!