I currently use the Logitech MX Performance mouse but after a good few years of service it is starting to go a bit wonky, so I've been keeping an eye out for a decent price for a new mouse, and this one gets some good reviews. It is usually around the £70 mark (still over £70 at Currys/eBuyer/John Lewis and the like). I know it was cheaper during Black Friday, but...time machine...etc. etc.!