I do like my simulators, so I watch a lot of Squirrel, Matt Davies and AirForceProud95 - In fact I based my own channel off of these 3, I do like them a lot!
Other channels I watch are Ashens, 442oons and maybe a little bit of nerd3 when I feel like him. I used to also love PhirefoxRBLX a few years back too, but he killed his channel off.