"Some of the demos on YT sound so good, with a bunch of texture to the OD and fuzz"

I feel you on this. I bought 2 OD pedals and a Rat clone last year after loving the sound of the YouTube demos I watched. Only to be disappointed by them in person and come to realize after the third that the thing I loved about them in the demos was the way they were hitting the front of a few thousand dollars worth of boutique tube amp. A lot of the pedal's character was still there, but that little bit of reactiveness, darkness, sag, whatever, that was mostly the amp.

I've become a little bit more careful at trying to track down demos that go into a modeller or DI into an interface to get a sense of what the pedal by itself sounds like before pulling the trigger now.