One thing I have noticed is that there are a few different threads asking about the issues they have with their GMRS 50V2 radios, including one where the radio said 50V2 on the case but the boot screen said 50x1.
But I don’t recall seeing any complaints about the KG1000G or plus model. People who have them seem to be happier.
The difference wouldn’t be noticeable in range as much as ease of use, quality of build, etc.