I have a .40 Firestar, I think it’s a decent pistol. It’s pleasant to shoot, probably because of it’s weight. Although I haven’t shot it a lot, I can say I’ve never had a jam with an assortment of ball and JHP cartridges. The Firestar is the only .40 I own.
I’ve also had a 9mm Firestar, it was also a good gun. Someone offered me twice what I paid for it a couple of years ago and I sold it. When I run across another I’ll probably buy it. I’ve never had the .45 model, but I’ll run across one eventually.