All these mice have excellent sensor and features for competitive gaming. You have to walk into a shop and try them yourselves mate. The overall shape and fit of the mouse to your hand will determine which is best for you. Everyone has different hand size, grip style and weight preference. Some like theirs to be under 100 g without the wire, in which case the g402 and the g502 would be out, while others prefer heavier ones with the choice to add even more weights.
Benq Zowie mice are also worth a look as they make various size to fit professional gamers needs. I personally prefer their FK series.