I got on a 9mm Largo kick once and still have a couple of the things. The 9mm Largo is pretty close to the 38 Super. It's basically a 9mm para with a slightly longer case. While you can shoot the 9mm largo in a 9x23, don't even think about shooting the 9x23 in a Largo. The 9x23 is much higher pressure and should be viewed as a magnum.
I have a Destroyer Carbine in 9mmL and it's mucho fun to shoot. I also have an Astra 400 and I've shot it with various loads and it worked fine. The 9mm largo was actually pretty stout in this gun.
I owned a Star Super in 9mmL like you're looking at. It worked fine. The pistol itself is basically a govt model knock-off, but it differs more than enough to not be called a clone. I got hammer bite out of it really bad, and I NEVER get hammer bite with any govt model type. Could have been a weak spring or whatever, but the backstrap is a solid one, so there's no adding a bevertail grip safety to that. I sold it as it caused pain to shoot it, so I saw little reason in keeping it. I know of others who haven't had any problems, so you may be fine with it.
As far as the gun/ammo combo, it's a great one. It runs great, and the ammo is more than capable of reasonably handling anything that comes it's way. Somebody made defense JHP ammo for the Largo, and you can use cut down .223 cases to make brass. The Star is scaled down just slightly from a govt model, so it seems a little thinner than a Colt.
Surplus ammo is getting old, and you can expect split cases and other problems with the surplus fodder. 9mm para is probably a better all around caliber to own, but if you have that base covered a 9mmLargo is pretty fun. The Star is a good platform for it.
Ross