IMHO there´s always need for unbiased reviews. The more info, the better for us consumers.
Problem is that about 90% of all reviews online isn't. Comes with the fact that most reviewers can't afford buying all brands out there, and some, especially magazines and large websites, mostly review airbrushes that are sent cost free from the producers.
Kudos to people like Mr Wheeler who dig into their own pockets to supply us with reviews.