Ofc, if you come on a series fansite, where most users have read very few other mangas, the result is kinda obvious (even through they are not qualified to rate it).
Also, "best" is subjective. Subjective =/= accurate. I would suggest using the word favorite instead (and we already have a favorites topic here.
Ps! What's the point in putting a spoiler tag in the title? It's not like we are discussing the latest chapter here. :getlost: