Best Power used to be the brand name for a supplier of decent uninterruptible power supplies (FERRUPS, Fortress, and others). They got bought out by Powerware/Exide or some such combination. I think bestpower dot com still redirects to their site.
I don't know the status of any trademarks and they don't manufacture under that brand any more, but you might want to do some research before deciding on development since your domain name is very close.