So after 4-5 years of vigorous use, my g3s have finally gave out. I sent it in and the repair guys said my waders are pretty worn out and will most likely be unrepairable. In the end, they offer me a 50% discount on any pair of waders. Now I'm deciding which one I should choose. Anyone has anything to say about the g4 pro or g4z? Are they worth THAT MUCH money? Or should I just go back with the newer g3s? Thanks.