I work as an institutional locksmith, so this will be focused on a specific brand.Dormakaba is a massive conglomerate, including Best Access Systems previously ow ned by Stanley. Best makes decent interchangeable padlocks, at okay prices. However, the three star review deals with my experience as they forced Keystone Web on me and replaced my Keysyone 600 with an online program that is total garbage and only really compatible with their products. Keystone is a key database management program, their previous program was a relic from the 1990s but it worked with any product. Which if you work in an institution with hundreds of keys, is a must. God help you if you want to add a non-system key, or want coremarks. For those looking for a database program stay away from Keystone Web. Decent locks though.