Out of those mice listed the G900 but will be hard for some to recommend even though it may be possibly the best mouse currently on the market IMO the price is not justifiable to some.
Something concerns me when you said piano finger.
I personally never had this problem, a couple members with very large hands commented their fingers barely hanging over the M1 and M2 button and would lift the buttons slightly upward when actuating rapidly. It's not the way you should be placing your fingers anyway but they were forced to do it so it didn't work for them. I wonder if your piano fingers will be forced to?
Measuring your hand from the top tip of middle finger down to the base of palm what is your hand size?
Mine is 18cm as example.
I have one son whose hands are very large and he feels only comfortable when handling the NAOS 8200 I gave him. He's tried other mice but he does worse because shape is more important than the sensor. With smaller hands I had a hard time flicking with the NAOS. Answer some of these questions to help us find which mouse is better for you.
- What's your grip style?
- What's your sensitivity?
- What's your maximum budget?
- Do you want additional buttons?
- What games do you play?
- Do you mind about prediction?
- Other relevant information:
Input anything else you want. Some examples: LOD, ambidextrous shape, weight, wireless, non-braided cord, glossy finish, button activation force, driverless, onboard memory, etc