There is the obvious Teamwork cast and Socialdissonance. However those aren't what you are looking for.
The sad part is that most people who are recording gameplay at this point have either played the previous games and have experience or are people who have just got into Monster Hunter and try to record themselves with horrible recording gear and awful mics so you get low quality sound and video.
Omegaevolution and Octaneblue both do nice videos, they've been going on for a while now, they both play together so some videos might be repeats, but from different views. However some of their videos are different runs.
Don't play to win, play for fun. Love playing games with people, that's why I love Wi-Fi 3DS: 1203-9417-6170, PSN: Trixster196