Exotics and the II-series

allthough they exist and although I´ve been only using the so called "standard-systems" ( i.e. DOS, ProDOS, CPM and UCSD ) i think about snooping around a little bit and trying to attempt to those exotic´s.... I therefor would appreciate feedback in thread or by pm´s from users that had made experience with those systems and listen to their opinions about advantages and disadvantages of the different systems compared to the "standard-systems" and hints to the "keep-care of that trap´s" that a user might have to solve while making attempts to that exotic´s...