V1 around 270+- , V2 is 390+-

Dont always blame the hardware for the problems, sometimes your computers USB hub may be faulty, your drivers malfunctioning etc etc. I often see people here complaning about their mouse being non-responsive and all, when its actually their motherboard or computer's problem. I doubt the manufacturers would wanna simply give you a faulty mouse. In rare cases of a truly spoilt hardware, just RMA it.

Hmm.. Does anyone have the Siberia V2? Any comments on it?

Now, that is one BADASS keyboard @_@;; Nothing beats a fully mechanical keyboard with nice perks.