I've been in the market for a gaming mouse for quite a bit. I've also done a lot of research on different mice and have narrowed it down to these three. All three are known to have perfect/flawless sensors, so that isn't a problem. Something I have read a lot about is Razer's bad quality control and how their mice can break after a couple months. However, I have also read that every mouse comes with a 2 year warranty and can be replaced free of charge. Mionix also seems to have a 1 year warranty on the Naos. Roccat, however, doesn't state anywhere on their website about a warranty, and I have read form multiple forums that people have broken products that won't be replaced because they live in the U.S. and the warranty isn't valid here. Is that true? If so, then that rules out the Roccat entirely. If anyone has any of the these mice and/or have any information they would like to share, i'd be happy to hear what you have to say! Thanks!