Reviews are majorly financially incentivised. "Would your write a review of this product? We can pay you $800 once published, with photographs...". That cash-for-contra does not particularly eliminate bias, because the review is keyed to generate sales and readership, on the common working proviso that the contributor is a professional in her or her background/area of expertise. Unfortunately, having worked on two magazines, I can vouch that very few reviewers were professional in any field (but wanted to sound as such, and often raised their voices to try and prove it!), and when it comes to photography, most are asking for a pimp slap backhand for their brazen misrepresentation of product understanding review skills.
Skip reviews entirely. If you have an interest in two or three films, buy one of each. Critical to your own "review" is to expose each roll in the same conditions and record details notes of what you are doing. You have to knuckle down with this and be determined to build a cache of results that came from your work, not the work of others! When the films come back, you will compare the results to the notes you made post-exposure. If you do not do this you will not learn much about individual films, and even less about published reviews that concentrate more on lines-per-mm resolution and half-arsed snaps of poorly composed subjects (that means exposure, composition, understanding of light, focus and general appeal are all deficit in someway or another).
YouTube!? Bleugh—! Geez, people have got the absolute neck to call themselves professionals while blathering claptrap.
Come on guys, get off, get off. Grab your camera, some film, your notebook and take it seriously as an ongoing project rewarding you with well-founded knowledge (your own!).