I don't sub to DireWolf20 because I have been pulling back on my sub count because I don't have a lot of time to watch people play these days, but for a straight forward guy who uses a lot of cool mods, I definitely suggest watching his videos. Personally I mostly watch his Mod Spotlights, but I have watched parts of his LP's.
He mines a lot off camera(which makes sense, because that can take hours for some things), and doesn't show everything he does(as others have said, he tends to not show his Thaumcraft Research and Bee Breeding), but he almost always shows him building things. Aside from a 9x9 after he builds his first one, anyway. Tends to craft things off camera unless he has a autocrafting system set up yet, in which case he uses it and sometimes just uses it to show things in action.
All in all, he's straight forward and somewhat silly. Sounds alright, meaning he likely has a good microphone. Doesn't do fancy video editing(I heard he only uses Windows Movie Maker), and honestly, I prefer him over other FTB LP-ers because of this. Heck, I prefer his videos because they are not filled with video editing garbage(seriously, I hate any video with screen wipes).
And most of all, he doesn't bitch about things not going the way he wants them to, unlike some FTB LP's who shall remain unnamed.