I have been using the AquaChek borate test strips for a while now. They are a little difficult to determine the color at the higher levels of borates needed. I just got some of the LaMotte borate test strips today and they are MUCH better. The color differentiation between 30 ppm, 50 ppm, and 80 ppm is much easier to see than on the AquaChek strips! (My pool is at 50 ppm and I tested with both strips and also did dilutions to test the lower ranges. I also added some additional borax to my sample to test the highest range.) IF you can find them I would recommend them! They seem to be rather elusive since they are a relatively new product for LaMotte. I have the Proteam Supreme test kit on order (it's a titration test for borates and a bit expensive--about $60!) so I will report on that once it comes in.