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If you really wanna have a heaven in hand, you might try grabbing ikari laser. it is one of the toughest mouse i ever encounter. Dropped it often and it still hard as rock and all its button are fully functionable.
Its disadvantages is its lack of side buttons. It have the usual two extra button and just another one for DPI change. Steelseries also provide a minimum software. You need a little bit extra effort to bind key to the side buttons. And you cant change your profiles from your mouse, you have to do it via the softtware. For multi-profile users, it is very inconvenient.
However, with the memory onboard, you dont have to set your buttons everytime you want to use your mouse. The binding will always be available to your profile.
Now, Steelseries already released XAI as Ikari successor, but this mouse still a powerhouse, give it a shot and try it for hardcore gaming. It is very addictive to your hands, once you grab it you won't grab another.