Well OOG is very much for laughs and not for serious gameplay, try Paul Soares Jr's
Spellbound Caves hardcore run for that.
I find Kurt, BDoubleO and Baj enjoyable to watch solo, although it's generally second-monitor background viewing while I'm doing other stuff, a bit like just having the TV on. I've also been watching VintageBeef plays other games (Bastion and Sleeping Dogs) and he's alright too. Etho's great and all but I don't understand how he has 2-3 times the subscribers as any of the others.