Thank you for the reply
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I tried the first and third and the ping was the same.
The thing is that when you are playing against other people you have got so many variables that could effect the speed of movement (different ISP, CPU, Gfx card, Ram, Network card, router, different country) so it is hard to be able to tell, especially if the ping is the same.
That's why I'd like to know what one is better?. Channel 1 the frequency is the lowest, channel 2 is a little bit higher and channel 3 is the highest in frequency. I haven't got the slightest clue to what's the best.