Essentially, I've only been using the duty finder to play restricted dungeons (aka the default settings) for MSQ and optional dungeons. I'm at the point where I'm interested in playing with the settings and entering unrestricted dungeons with 2 other peeps

That said, I'm a little confused about how level sync/ilevel sync works. In what scenarios would you want to keep level sync off but ilevel sync on? And in what scenarios would you want to have both off? I'm not grasping the advantages/disadvantages, outside of the obvious change in difficulty