I have the Quick 4. I would have stretched my budget to go up a notch or two, but I had to drive a zillion miles just to find a Quick in my size, the extra small with 26 inch wheel. An order for a higher grade Quick would have taken quite a while and would require another long trip. I did not want to lose the summer of riding. I am very happy with it so far, but only 54 miles on it. The only issue is that the derailleurs need adjusting already.