I don't think it's gonna make a difference. At least in Amazon ES, most reviews are written by top reviewers who have made their "career" by first reviewing small products bought by them and after that they're gifted other, bigger products (using 100% OFF coupons so they appear as verified purchases). The moment you find a review with several pictures and paragraph-separated long texts you know it's a paid review with zero value.
And Amazon ES is full of those.