Since I watch a lot of LPs coming from a lot of LPers, my favorite picks are likely to change every now and then. People whose videos I seem to enjoy on a constant basis are HCBailly, who, sadly, seems to have a really hard time keeping up his motivation for quite a while now, which is why he isn't as active as he was a couple years ago and Suishomaru, a german LPer who's been doing LPs for many years now and who still seems to be full of energy in that regard.
There are other people who are alright in what they are doing, as well: GameGrumps, Proton Jon, Chuggaaconroy, NCS, PBG, ballerscuba (highly overlooked that guy) and to some extend ShadyPenguinn, although I liked his channel more when he had more of a focus on battles, instead of LPs.
Yeah, like I said: I watch a lot of LPers and their LPs ^^"