I have not shot the Bersa but I own a Mill Pro in 9mm SA/DA. It is very nice for the price and has a lot of features. I would just consider a few other factors, I don't know a lot about the Bersa's but have heard some good things.
My Mill Pro is too big for pocket carry, not sure about the Bersa.
Weight, steel vs. polymer to me it is a direct trade off more weight = better controllability, less weight = more comfortable carrying for long periods.
Holsters what is available, Glock 26 & 27 holsters fit the Mill Pro also XDsc holsters, not sure how available holsters are for Bersa's.
Breakdown ease, how it fits your had, Warranty (I think both are lifetime?), Capacity ect. You get the point just make sure you consider all factors before you decide. Either way I think both are good values and quality firearms. I almost forgot, my only regret with the Mill Pro is I didn't get the Stainless Slide. I hope this helps.
Good Luck and Be Safe!