The only vlog I watch are
revzila for their gear. There's a few others but along as it's decent.
bike reviews from someone in the business.
I wouldn't put Revzilla in the "dear diary - vlog" category. They're more of quality product reviews, even though they lean more on the positive side and don't point out the inefficiencies of the products they sell.
MotorcyclistOnline has really good videos/reviews, if you're looking for quality content: http://www.motorcyclistonline.com/videos/motorcycle-videos?video=x4kn11u