Coming from the deathadder essential, the difference is huge. Much lighter, and very durable. I have dropped it on the floor (marble) 4 times because it fell and nothing happened.

Even more beautiful than what I saw in the videos up close.
In terms of comfort, it suited me perfectly, whether palm or claw grip, it is comfortable with both ways. It is neither too big nor too small, just right. If you like to completely rest your hand on the mouse, then maybe you should go for a heavier mouse.
The polling rate is already set at 1000hz, no need for any adjustments.
It even did a firmware update as soon as I connected it to the PC.
I have no issues with the software, it runs perfectly fine. I also have a HyperX keyboard and you can synchronize them in terms of lighting.
The included toggle is a nice addition if your PC is at a distance and you have doubts about whether it will have a perfect connection.