As the title says.
I personally like logitech and corsair , they make good keyboards and headsets. I never tried steel series althought my friend fanboys about them.

I personally like corsair the most because of the extensive amount of customization options they give for things like color schemes and macros. I also like zowie because they dont give the most amount of customization when it comes to peripherals but they're top quality and feel great and very responsive for games that require quick action like an esports title or shooter

i preffer mad catz und roccat as gaming brand, they make both quallity gear  but the are quit expansive, too

So I think Corsair is more for looks rather than actual gaming as owning multiple RGB keyboards and mouses and i find many of them pleasing to the eye, where as i would use logitech mouses such as the g305 for gaming rather than any corsair mouse