We had Optimum Glass Studios install interior glass railings for our main staircase and sunken family room in our home. They were a pleasure to deal with, knowledgeable and the product was delivered and installed on time and as promised. We had 4 quotes. We went with Optimum due to competitive pricing ($1,000 less than the highest quote!), knowledge and professionalism. The only company that came in with an iPad to design and measure! Any question I asked was answered promptly and with thought. Everyday I look at my glass railings which I love and think 'good choice'! I would not hesitate to use them again or recommend them and I am extremely picky about service and quality.