i dont think that its overhyped that much. all plecos are territorial, yes, but so are a lot of fish. there are a lot of plecos that really do not get on with others, and some that just hate their own sp. (gn for common example). a big tank, and lots of hiding spots though, then you can usually sort out small problems. even so, i know that some plecos (bristlenose experience) actively hunt the weaker males and kill them