$116.00 clams for these things is a steal, so don't wait.
I agree with the guy who wrote a review saying(not sure where) that the Zen runs a quarter to half size large. Best way to fit them is to measure your foot in centimeters, and get the closest size that is just a bit bigger. If you want a roomy shoe, by all means get the closest size that is about One centimeter larger. But, I wear a size that is just a few millimeters longer than my foot and they are great.
Ever notice how one guy will say a shoe fits large and the next guy says it sizes small? US and Euro sizes do not match up very well. That's why. So, do not size these with the U.S. size conversion. Measure your foot in centimeters, and go from there using the euro size conversion.
Another thing about the Zen: People tend to lace them too tight IMO. If the toe feels tight, back the laces way off, then back them off some more and then just take the slack out from the toe to the ankle and, voila, plenty of room in the toe.
Fit is kind of classic Scarpa: cut close to the instep up through the big toe, and a skosh more room to the outside of the foot. It is a low volume shoe, but not particularly narrow IMO.
Performance-wise, I consider the Zen a rock hiking shoe. They are grippier and better when the going gets steep, than most of the other hiking shoes on the market IMO. They are also way better made than most. They are firm but the EVA does a good job of protecting the foot against stone bruises.
This is a classic IMO.