I have now had the opportunity to do business with Glenview Key & Lock three times, and have been 100% satisfied on each occasion. I am impressed by the speed with which they respond to calls, and the honesty and integrity with which they do business. They will not sell your products that you don't need (even if you initially request them), and they can be trusted in your home. Most importantly, the work they do is accurate. If you have them copy a key, I would be highly surprised if it did not fit perfectly in your lock. This reliability is something that I have rarely found from similar businesses.