I can't game accurately with a M/K unless it's a proper gaming mouse with plenty of customisable button settings. I use a Logitech G502 Hero gaming mouse.
This is a wired gaming mouse that has two mechanical resistance settings for it mouse wheel, adjustable DPI, customisable RGB settings (although this mouse isn't that flash, but I call that a plus point), 11 programmable buttons and a compartment underneath to add weights to customise the physical balance. One has to find and download the software to customise the button settings which is a little annoying, you would expect the instructions to at least give you a link or be able to download the software automatically, but once you have it, it's easy to use even for a monkey like me (Link here to save you or anyone else the trouble).
I certainly won't claim to be an expert in gaming mice, but I like using this one. It's comfortable to hold, feels sturdy and the buttons are mostly easy to reach with little adjustment of the wrist at the most. I will say it's a little disappointing that you can only have five button profiles and I'd say that's not enough, especially if one plays a verity of games. I also can't seem to sync the RGB lighting with the in-built keyboard on this laptop, it appears that only works with a separate one. Overall, I'd recommend it, but don't take my word for it, other members might have other mice to recommend.