poketubers I currently watch:
Haydunn - he's not very good competitively but his commentary on playthroughs/wi-fi battles is SO FREAKING GOOD LOL
TamashiiHiroka - idk i just enjoy her vids
JWittz - ^
AME OBVIOUSLY
TyranitarTube - he helps me keep up with whats going on pokemon-related and his speculation vids are fun to watch
BlameTruth - he's pretty good competitively, I've been watching him and his battles on lower tiers for pretty long now
Glitchxcity - ive been subscribed to her for 3 years now and all her remixes are very good, too bad she's kinda inactive now :<
poketubers I used to watch:
joe/pokeaimd - best poketuber competitively, his vids were ok but (more or less when XY OU arrived) he started posting way too many OU battles with the same mons over and over again and it got to a point where his vids were always the same. also, his vgc battles made me cringe since most of the times he either used a copied team or a bunch of op mons = no diversity. havent heard about him for almost a year now
shofu - competitively he's decent (though he only posts battles where he does good/wins, sadly) rages A LOT on his reborn playthrough. commentary is pretty funny on playthroughs and wifi battles if you exclude the already mentioned rage
dookieshed - he became WAY too inactive
giancarloparimango - he's a VERY old poketuber and I used to watch his LPs, although, after a certain point he became extremely annoying so i just quit