I've been using the Accu-Chek Instant Test Strips for the past 8 months with my Instant S glucometer, and the performance has been outstanding. The readings are always consistent and match the values I get at my clinic. The best part is that there’s no need for manual coding, which eliminates setup errors and confusion. The strips require very little blood, which is helpful when I have to test multiple times a day. Definitely a top-quality product.