well.. ultimate is ultimate (something like.. 10 times stronger than an expert? like lvl 10 expert is equivalent to lvl 1 ultimate), and in my union im mostly in charge of generating pp from expert demons and leveling them, so im not there much for ultimates and someone else in our union handles those (unless im handling cleanup duty then anything goes)
highest ive been to an expert is a lvl 174, and the highest number ive seen is 4k+ with double amphisbaena, still doesnt seem too dangerous for me
(i have not been to a lvl 100 ultimate tho, since most of the ppl in my union leave them untouched when they reach 70+ or something)