I ordered this mouse in as it was the same design as the G502 that I very much enjoyed, but I wanted to keep my peripherals matched with my other Razer products, as well as my recent experience with the "updated" Logitech G Hub app was VERY frustrating and not enjoyable. I use this both for work and play at home for many games.The design itself is great and feels very nice to use with my preferred fingertip/claw grip. The biggest complaints about the mouse fall into this field for me though as I very much miss the 2 buttons on the left mouse button that are present in the G502, but are missing in this rendition, however this is not to be faulted against Razer as that is a different mouse, just something I'd love to see. The other complaint is the removable thumb paddle which is very short and difficult to reach without readjusting your grip. The last minor complaint is that the underside compartment where the USB dongle can be stored is a very cheap plastic door that I can see breaking or becoming lost after extended use. It would have been nice to see a more stable hinged or sliding door to house the USB when traveling. Aside from that, the buttons feel responsive and pleasant, and the scroll wheel resistance settings are much more preferred rather than just tactile or free spin. The mouse feels light and sturdy enough that I don't ever find myself thinking it feels cheap, and the grip texture along the sides of the mouse is comfortable and doesn't appear to be wearing off so far.As for the functionality of the mouse, the connection speed and response time is incredible! The mouse reacts as fast as a wired mouse with no hiccups that I've encountered so far. The 20k DPI is ridiculous to say the least and I could never see it being used by myself, but it's fun to see the point scream across my monitors at a mere jostle of the mouse. The battery life of my mouse when I first received it was dismal at best and I was very disappointed to see the battery life drop from ~90% to ~60% after sitting on my desk TURNED OFF for a few hours. I charged to full a few times and was still encountering the issue, so I reached out to Razer Support. They provided me a firmware update file, something that I thought the Synapse app would have done, and after following the instructions to update the mouse, it has been night and day difference! Now my mouse lasts MUCH longer even when left on, with a sleep timer set, while having the RGB brightness set to 30%. Between going from work to home, I use this thing for upwards of 12hrs a day and I can last about 3-4 days before needing to charge.Overall, I very much enjoy this mouse after the Firmware Update was applied and highly recommend it to anyone who enjoys the feel/style of the Logitech G502, but want to try out something different. I would love to compare the wireless G502 to this one, but I don't have the pocket money to do that. So take this review as simply a review of the mouse and G502 "fashion" comparison.