The Astra A75 was arguably the best gun in the bunch listed above. I liked the design for its simplicity, and its feel in the hand. It was made both in 9mm and .40, using the same magazine.
But it really didn't have a place: it was too small to be a duty gun, and too heavy to be a pocket gun. The Star Firestar shared the same problem. Unfortunately the A75 appeared only when Astra was in its death throes, and the finish was a bit rough; it soon became an orphan.
Astra made a small number of lightweight A75s with aluminum frames, offered only in 9 Parabellum, not .40. That was a more attractive proposition, and I bought one from EAA. Every so often I run a couple mags through it, just to enjoy it.
M