That helmet cam footage makes me want to get the big bike out, just put up with extra chunk on the climbs and give it the beans on the downhill sections. I imagine that approach would start to wear thin by the end of the week tho!!!
The Bike Mag one is Weird Fishs by Radiohead I fink…
The video isn't speeded up BUT the wide angle does make it look very fast (although I wasn't hanging about)
I promise you that you DON'T want a big bike. That video shows DH highlights, doesn't show hows of pushing, vomit inducing upulations, flat bits, short sharp ups and miles and miles of twisty, twisty singletrack