We don't have the same lineup here in NAM, but IIRC, the UConnect "Live" side of it implies (literally) that you bring your own data connection for Live services to the party via an app on your cell phone.
Beyond that, the whole system is integrated such that voice (commands, hands-free), steering wheel control, etc., are all properly integrated in the UConnect version.
Available for (at a minimum) certain Fiat, Alfa, Lancia, and Dodge/Jeep models.
As far as "the GO connect" part of your question, I'm unclear what is being discussed. "connect" has been used by TomTom to describe both their watch software and "MyDrive Connect" is the current app for updating the latest units.
Hope that was of any help whatsoever!