I have a few, my fav is Jessie Gender, who gives insightful reviews but doesnt shy away from criticism of Trek. I also like how she looks at things from a gender critical angle, which is something few peoppe think about. Sean Ferrick is another cool one, as are the guys from Trekyards who are more focussed on tech and ships. Who else should I look up on?
I like Steve Shives too. I started watching him a long time ago for his atheist videos, but stayed for his Trek and other stuff.