I think the most rational arguments could be made for T-Funk and Hoban right now.
Tfunk had a great part, and ended it with a trick that will go down in skate history.
Hoban has put out a couple parts right? All super crazy, and showed up to contests and killed it.
I'd also like to nominate Gustav, everything he does is perfect, and aside from his actual skateboarding, his videos and company are a huge contribution to skateboarding and have really helped put europe on the map (no pun intended). Personally, i see value in that.