I bought this mouse 2 weeks ago on sale for 90 euros. Here are my impressions at this price point.
I am a former owner of the g pro wireless. Compared to the gpw, the difference is huge. The weight elevates the shape and you really see an improvement in your aim after 2-3 days. Combined with the wireless feature, the mouse feels almost non-existent in your hand. For hands around 18cm, it is ideal for this mouse. Claw and palm grip are fine, but for fingertip grip, it is better to choose the model 0 wireless or the razer viper ultimate as they have a lower "hump". In terms of sensor, it has been perfected for years, so you won't see any differences compared to other mice on the market. The cover with the feet and side grips, I didn't find a reason to change them, but they are a good bonus for people who may find them useful.
For 90 euros, you won't find anything better. But at 150-160 euros, the story changes. And I will focus on some minor details that I would really like to see Logitech improve.
The switches are the omron 20m, which although good and do not have the double-click issue that the gpw has, they are quite mediocre even though they have a satisfactory click. Their negative is that they have a debounce issue, meaning you have to press the click more for the switch to be pressed again. I would like to see kalih gm 4.0 or 8.0 switches, which would make a huge difference.
The feet, although it has teflon PTFE, which has a pretty good glide after a week (yes, that's how long it took to break in), they are quite thin and I would like to see something better like Hyperglide/corepads/tigerarc.
Finally, I would like to see USB type C and a better lightweight charging cable. Type C wouldn't make it a better mouse in my opinion, it would just be a better standard. A better lightweight charging cable, however, is necessary if you want to play while charging. Alternatively, a charging dock like the rvu would be great.
TLDR: one of the best mice on the market, even at 150 euros, but needs some minor improvements to make it unbeatable in all areas.