Summary: The mouse itself is a little on the lighter side so it feels cheap. Glossy finish has a habit of getting gunk on it just from being used a lot and shows fingerprints. Returned it and got the matte finish, which is much nicer.
I'd give more stars for any documentation whatsoever
Brent Butler, Amazon
22 April 2014
Summary: I'm another one who can't help the need to compare this to my Logitech G700. In use, I don't find any find any practical difference between the performance of the two mice. However, in shape, the G700 fits my hand much better than the Sensei. The Sensei's shape simply emulates any standard cheap mouse, where the G700's form fitting design really provides comfort to my hand. I like the charging station.
Summary: The Bad: My scroll wheel made a lot of noise when scrolling up/down. Very loud clicks. It even made a noise when I wasn't scrolling. I was simply moving the mouse around on my table and the wheel would make a clicking noise. The 4 side buttons on the left and right of the mouse are too low profile. So much in a sense that its easy for your fingers to miss when attempting to click.