I have always found it best to ignore the good reviews and instead look at the negative reviews to identify patterns of complaints.

If there is a pattern of failure ,quality, or issues and its not worth dealing with I wont buy the product. Also if the issues are common among vendors or products then I go with the cheapest. Why pay more if they are all crap or just as risky to buy and it sets a more accurate expectation of the product.

I also typically ignore the negative reviews complaining about the package arriving damaged or late as that can happen with anything as long as I don't need it by a certain date.

I also look for customer pictures of the product if available.