What other meter should we use to test? As far as I know, all of us that are installing and selling tint are using these BTU meters. That should make the measurement tool across the board constant, therefor, results are based on different films using same measuring tool. Just for my own FYI, can you please PM me the results of those tests. In the end, if there's a film better than what we're using, then we should be installing it. We're more focused on technology and performance than branding. Hope that makes sense. We chose Huper Optik mainly for its clarity and heat rejection and we sampled many before choosing this one.