I've been playing a lot of Gibsons lately . The biggest difference I find is in the pickups.
I'm not sure about those new zebra coils in the J models . Didn't try one of those . But I have herd good things.
My favorite Gibson picks are the 57 classics. In my opinion the sound way better than the rest.
Also watch the neck profiles. Very different from model to model .
I thing the studios sound a lot like their standard counterparts