This is a surprisingly good mouse. I've been using the Mad Catz R.A.T. line of mice for probably 8 years now. I've enjoyed having a thumb rest and I thought I wouldn't be able to use a mouse without one. So I bought the Logitech G502 wireless mouse and was extremely happy! Then I went to a friend's house to troubleshoot his computer. He was using a Glorious Model O Wireless which is another lightweight mouse. I was amazed at just how light it was. So after some research...I decided to buy this mouse. But I bought it expecting to not like its shape. But holy moly is it ever good. I ended up ordering a second one for my work computer.Now...not everything about it is good. Here's the bad:- The mouse does feel a bit cheap. The mouse will flex and bend when you press it. This isn't something you'd really do...but really does indicate just how thin the plastic on it had to be.- No DPI switching. It would have been amazing if it had one extra button on the mouse that you could use as a G-Shift key so you could hold the button and mouse wheel up/down to change DPI. But currently you have to open the app and change it each time.- The back/forward buttons on the side are beyond bad. The buttons themselves feel really cheap and the click is deep into your press and pretty uneven.- The scroll wheel. The grip on it is good. But...they're using some kind of rubber to create resistance against it as you scroll. So it actually takes a decent amount of force to scroll up and down. The good part of that you can safely switch single weapons in FPS games without overdoing it. The downside is that it makes scrolling through webpages very tedious.- The price. This mouse is definitely overpriced. But what did we expect from a company that sells a $330 Logitech G915 Keyboard with 30 hours battery life, low travel, terrible switches, and no wrist-rest which is in all honesty...a completely mediocre keyboard at best.Now on to the good. Or rather...Great qualities of the mouse:- Holy moly lightness. If you remove the little compartment cover on the bottom, the mouse weighs in at just about 59g. It's effortless movement. I tried using my dad's computer earlier today and he has a heavy corsair gaming mouse and I could barely even move that mouse as I've gotten so used to the lightness of the Pro X Superlight. It gives me a ton of confidence and I saw a notable difference in my performance. In gaming. Not in bed. Still haven't figured out how to solve that specific problem...- Battery life. IS FAR BETTER THAN ADVERTISED. I just kept laughing. I got the mouse and out of the box it had like 49%. I did a 3 hour gaming session and expected battery to be down to like 40-45%. But nope....48%. So I thought the battery usage was just incorrect. Tried next day. Played for like 5-6 hours with full 1000Hz polling rate. Battery down to like 46-47%. In fact...after a full week of usage...it's only gone down from the initial 49% to 40%. It probably helps that the Lightspeed receiver is close to the mouse. But overall that is amazing battery life and far better than I could ever have expected.- Wireless connectivity. I think I've had just 1 instance of signal interference. And even that I'm not sure was the wireless connectivity. It may have been a momentary game issue. Other than that it's been flawless and is connected immediately and always.- Battery/power management. The mouse is somehow always on/aware. Even when the computer is asleep, the lightest movement of the mouse sends a signal to turn the computer on. Which is actually bad...because if I put the computer to sleep and slightly hit my desk as I'm getting up to leave...it'll turn back on. It's truly remarkable.- Mouse feet - Super glidey. Although with how little this weighs...I'm not sure if this is more a result of the low weight of the quality of the feed. But on the hard Logitech G mouse mat it slides around like it's on an ice skating rink.To sum it all up....this is a ridiculously expensive mouse. They're charging you more, for giving you less. There's no particular reason for it. And while you are overpaying...you can at least take solace in the fact that it is a damn good mouse despite some of its flaws. And it really can improve your gaming performance, and also give you the ease of use of having a long life wireless mouse.So go ahead. Waste your money. Because this is one of the best mice you could waste your money on.