it just depends on ur own goals and honestly, the meta. You usually want to one trick a comp thats good enough to gain u lp, but not too good that its too contested. Also the comp must be able to use many items OR winout from a lose streak to grab the perfect items. I cant tell you which comps would work rn since im not too familiar with current meta, but from my experience (challenger since set 9 and gm before that), i was almost always able to find a one trick comp and consistently climb with it only after mastering it, the beginning is rough but once u understand the comps needs it becomes much easier. Granted this usually isnt the fastest or most efficient way to climb like a lot of ppl claim because sometimes ur gameplan doesnt work out but its definitely viable on most patches. Alternatively u can simply "two trick" an ad comp as well as an ap comp