You should do search for CX4 Storm and read the resulting threads. We've had many threads on them and the overall take from owners is positive. I own one in .45 and it's a gem. Nothing else shoots quite like them. Thinking seriously about adding a 9mm version to my arsenal, (.45 mags are hard to come by). Perfectly sized and they're at a good price point, usually.
I've had the Beretta Storm Carbine in 9mm with the 92F magwell for quite a few years now and she has always performed excellently. The gun is 100% reliable. Eats pretty much anything I put through her from Tula to reloads..... Digest it all... Nice carbine to go with my Beretta 92's... Don't think you can go wrong with your intended purchase...
I own 2 in 9mm, 1 for my lefty and 1 set up for right hand. Both have run flawless. Low recoil, shoots poa, and cleans easy. Both take the 92 mags. I take one along in our camper on road trips. It is a capable platform.
I love mine. Very accurate and fun to shoot. I've had zero malfunctions out of mine regardless of the ammo used. I would say buy it! You will not regret it.