[berettafan]

CG is new to the market (relatively) but has been well accepted by the shotgunning community. I think you're in good shape with either. Both have a non gloss finish which I think is vastly preferable to gloss.

Onyx pro has stunning wood. Absolutely check out Joel Etchen guns if you want to pick a particular gun.

Mechanically the 686 series is all the same. your differences among these guns will be fit AND sporting vs field models. The onyx pro sporting, for example, has the palm swell, wider rib, mid rib bead and likely uses a white bead at the muzzle end vs silver bead on field models.

The 686 action is a lifetime gun. I would guess the CG to be similarly built but time will tell.

On used models: with O/U guns the gun will eventually 'flop' open. it is very difficult to tell from pictures whether this is the case. I handled an onyx pro locally that looked nearly mint but upon opening the gun I discovered it had some miles on it. still perfectly fine but I opted to go new SP1 sporting instead. happy I did as I think I prefer the silver finish to the black.

Interesting Fact: The onyx pro was originally a Cabelas exclusive. it was quite popular and Beretta released them to other dealers.

Again, for nicer wood Beretta guns check out Joel Etchen. Best pricing AND you pick your specific gun.