I'm looking an upgrading my Gliga Gems 1 violin to the Gama model.
Would the Gama be a major improvement to my Gems 1?
If you're upgrading, try a bunch of affordable violins and pick your favourite one. Although some people suggest that you try unaffordable violins to get a feel for great instruments (it's a great idea), some people have greed issues, so please consider your personality before following this suggestion.
I agree with what Ella said. Brand loyalty on violins seems unwarranted. (But I'm on my third Ford.)