I play CSGO casually and Overwatch COD kinda games like once twice a week but my main aim is to play better in csgo. Im confused between G403 and G502. Though there is no sense of comparison. But I can adjust in both shapes. Thing is which build quality is better, has better and responsive button and better reliability? If any other in that price range can be considered but excluding Mionix as its not available in my country. Just Razer Logi and Steelseries (though ss have poor components as scroll wheels and clicks die way to early)