I currently have a Razer Deathadder 2013 model. I use to have Logitech MX series, but got sick of the cords always going bad or the build quality issues. I am open to try them again though. The razer has been great, but I know there are better mice out there. With the shape of these two which are very comfortable in my hands, what is the best gaming mouse for FPS gaming for today? Budget of no concern. Thanks!