Has anyone had a chance to compare these two head to head? I currently have VTZF 3U (for a month) and find myself struggling with it a bit. My feel is that it sort of lacks the agility a bit, even in singles play. I had a chance to hold Voltric 80 and 70 in a shop - I liked the feel of 80 a lot, a lighter feel, than my ZF. Voltric 70, on the other hand, felt worse in my hand, so it's out of the question. I don't have a chance to play VT80, so the question for me is - should i restring my VTZF 3U and try to adjust more to it or should I buy VT80 3U instead and sell VTZF later?