I have shot both Guns and the Zoli is a super nice gun. There is actually one on this sight a 32" with a good selection of chokes and a custom stock. I used to work in the shooting industry and my personal opinion is the one thing that hurts Zoli USA is Steve L. I'm not going to get into it, but that is my opinion. I met Paolo Zoli at Shot Show about 5 years ago, he is an amazing guy and i'm sure he has no idea of how things are being run in the US market.
CG on the other hand is a very nice gun and has even better customer service. I shot a CG Summit Impact. The gun shot well and balance was great triggers were great. One thing was the barrels both shot where they were supposed too. The way they do the barrel and the chokes they pattern amazing and hit targets hard.