new mouse - advice

Nope, no more Logitech for me, I no longer have confidence they are built well. If I spend around 70 € on a mouse I expect it to last a few years, even with heavy use.

I had a Razer Copperhead before I had the Logitechs and the Razer also developed problems after too short a time, also the switches / pillars actuating them.
Also I didn't like the ergonomics on the Copperhead but that could be different with the Imperator.
But like I said, I will let the problems with my G500S develop some more and then try to get a new one through warranty. I like the ergonomics on the Logitechs, just not the quality of the materials they use.

So in the last 5 years I had three gaming mice, Razer and 2 x Logitech with a total cost of about 210 euros....the mouse I had before that cost maybe 30 and served me (with hard use) at least 6 years...

The mouse I have for 5 years is the mouse I used 5 years before that
Its cost is 0€ because it was a gift. I was looking online for shopping a new
mouse, keyboard and mousepad just like the ones I have for 10+ years.
Their cost plus shipping is around 18€

Last year I bought a mouse and keyboard set that I thought they would be
like the ones I have, but they are not. Really crappy choice to throw away
10€. Crappy city dealer fooled me. "Oooh, but they are the same quality"
No, they are not the same quality. They don't seem to be made by Genius.