There is no one-size-fits-all answer to this question, as the best scope manufacturer for your needs will depend on a number of factors. However, some of the most popular and well-regarded scope manufacturers include Nikon, Celestron, Bushnell, and Leupold. These companies offer a wide range of products at different price points, so you should be able to find something that fits your budget and requirements. Do some research on each of these brands to see which one would be the best fit for you.