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critical cx1 gen2 or cx2 gen2

Hi guys,
I wanna order a new power supply and i wanna get the critical power supply. My problem now is...how to decide between the cx1 gen1 and the cx2 gen2? Is just something with the wireless footswitch, that i do not need or is the cx2 better than the cx1? And why is better?

Thanx for the answer and excuse me for the bad english.

Kind reggards