For kitchen devices, ATK or SeriousEats. Anything else: if you don't have a site you trust, then the only recourse is to look at LOTS of sites and read between the lines. By "sites" I also include "user forums." This also applies to movie reviews, btw. Rotten Tomatoes is trash. You can't average Trash opinions and end up with anything other than Trash. What you want to learn is "what is this movie like, and will I en…
That's why Wirecutter is useful: convenience. They might not have the best product recommendations, but for items they "review", they provide an easy to click button to buy the product.
No offense, but reading random review sites, reddit, yelp, forums, misc google SEO landing pages with affiliate links, etc to try to find the best product is a huge pain. If I can go to 1 review site that is good enough and just buy the thing, the convenience often wins out.