Yes, for me it was really impressive and I still think it's one of the best shounen animes out there (even some filler episodes were not *that* bad). But the arcs were ridiculous, especially the Feng Shui one. I could more or less get over the others, but that one? Mindfuck XD. I wasn't veeery fond of Sayo and his brother neither. The only good thing of that arc was 1/3 no junjou na kanjou &hearts

(WTF Namikawa, that guy is everywhere XD)