The Razer Basilisk x Hyperspeed wireless mouse is a very good mouse. If you're not a big RGB fan then definitely get this mouse. You can use the razer synapse program to completely reprogram every button. It has a very fast response rate hence (Hyperspeed). It also has blue-tooth capabilities but it is not as fast as using the 2.4ghz dongle.
Overall nice ergonomic feel and texture, the scroll wheel ticks over nicely and the side buttons feel nice as well. My only complaint is the mouse wheel button needs a bit of pressure to push in and it doesn't go in much at all. (very shallow)