I've got a Roccat Kone Aimo Remastered (ROC-11-820-BK, P/N GM1820-02-A01). It's got a wheel (with tilt), 2 clickable middle buttons, front/back, and a a sort of "shift" key for the mouse (hold it and any button can be mapped to an alternate function). Pretty comfortable (to me), and the driver can save all the settings to hardware in the mouse, so you theoretically don't need to keep the driver installed after you initially set the mouse up.