An anonymous reader writes "A new mouse performance speed-testing software has scientifically demonstrated that there is virtually no difference between the performance of expensive, high-end gaming mice and cheap laser office mice. The software, called Metalocity, is available for free download so you can test your own mice and confirm the empirical results for yourself. It also shows that the multi-button approach of the Razer Naga and WarMouse Meta increases user speed by up to 112 percent." Note that this report comes from someone who wants to sell you a $80 gaming mouse with a zillion buttons on it, so a grain of salt is required here. But the question is valid: are the expensive mice really worth anything?