I have been using Keto-Mojo's GKI meters since going Keot 5 years ago. As someone who has a background in the health sciences and is very dedicated to clean eating/healthy living/fitness, I look for data-driven ways to quantify my results, in addition to my own subjective assessment of improvements in my well-being. To say I have been very selective when it comes to products use and/or recommend is a gross understatement. This is one of the few companies with high-quality, accurate products (yes, I test myself multiple times every day), and their customer service, shipping, etc, is reliable.