Re: The top ten
I would suggest that the top 10 idea is really dependent on your market - it can vary significantly by region, genre, style, whether it's for music, corporate, theater, etc, etc, etc.
For instance, while D&B might be popular in some circles, in many markets Meyer and JBL are more prevalent.
Shane mentioned Meyer, I would also add Clair to the list, though proprietary. And Nexo.
Are you thinking about going big Silas? If so, be careful, "if you build it they will come" is a nice idea from a movie that doesn't always ring true in the real world.