I am subbed to:
VintageBeef
AnderZEL
Etho
Guude
I only really watch the FTB videos for any of them that upload multiple things to their channel. I'm not sure if I have a favorite, though, because I watch them all for different things.
Beef - his microblock building is impressive, and I think he's pretty funny.
AnderZEL - that crazy viking cracks me up
Etho - Always cool, calm, and collected, it seems, and he does a lot of unique things, like his sky islands and train transports.
Guude - I have only really watched Guude's older videos while I still try to catch up because I loved the things he did with turtles on the Mindcrack FTB server.
Other Youtubers I watch:
Paul Soares - His Survive & Thrive series is the first Minecraft series I ever watched and he taught me everything I know about vanilla
Direwolf - Have only seen his season 5 LP and I'm not caught up yet, but he is great for learning the mods and explains things well, even if things don't look pretty that he builds.
As far as the UHC goes, I watch Anders, Beef, Paul Soares, and Etho and that covers all but one of the teams. I'm not really familiar with the other guys so I don't really pay attention to how they're doing.
I like Pause, but I find his solo videos boring. I do love his interaction with Beef, though, so I have watched the From Ashes series on Beef's channel. I may start watching GenerikB though because I find him funny and he does cool bee stuff and I want to get into that.
Nebris is creepy to me, by the way. His raspy voice just makes me think he's a cold blooded killer or something. LOL
Okay, that was way more than you asked for, sorry