I don't own either as SIGs are by far my choice in metal frame pistols. I have tried both and my son owns a CZ75 SP01 that I have shot quite a bit. If I had to choose between the two I would go for the Beretta 92 and most likely will purchase one some day.
However as always make every effort to try each out and then go with what works best for you. Both are fine pistols.