Polish aristocrats - would be better off if we had Polish magnate families?

Magnates implies corrupt landlord class, who work against interest of Polish people of lesser means.

Ukrainians lost millions of its intelligensia murdered (let tehy rest peacefully) by Russian and Soviet regimes, but we will recover sooner or later.

You will never recover because zilch will never become million.

What if the communists never hunted down the Polish nobles like Dogs. Would we have been better of with the rich Polish magnate families today economically/politically or not?

Well, aristocracy belongs to the past:)

 We got plenty of them out here in Europe. The only difference is that the Polish aristocracy lost everything while the rest still got their estates and names.