hm...if u buying the den-o series, theres not much to watch out for because the den-o series is quite durable compare to the previous sic..but do note if there any looseness of the joint or missing part..do ur researches too before u buy any sic series..some series have fragile joint issues..oh..the sword form and momotaros have two version..the initial releasse and the normal..the initial release included a diecast sword for momotaros..thats the only differences.

for kabuto series i havent heard any breakage issues..but for the agito series,g3/g4 in particular,i have heard and experience the breakage issues myself..but lucky i got it dirt cheap so i dont really mind..give me chance to do some mod on them..