I own a CZ. I've shot the Beretta. There is really no wrong answer if one wants to be fair about it.
They are both proven designs. Both are accurate & reliable.
I like the CZ. It's a bit more off the beaten path than the Beretta, which I like. I prefer the fully enclosed slide, for appearance's sake. None of this is really a slap at the Beretta, just personal preference. The CZ is a bit less expensive.
Which one do you like best?
“At the core of liberalism is the spoiled child – miserable, as all spoiled children are, unsatisfied, demanding, ill-disciplined, despotic and useless. Liberalism is a philosophy of sniveling brats.” — P.J. O’Rourke