I tried these on recently and am pretty...
I tried these on recently and am pretty much set on buying them after doing thorough research. However, I'm a street size 7 and have tried on the 6.5 and 6 and can't tell which fits better. In the 6, the entire shoe molds to my foot but my toes are pretty curled and might even be overlapping...in the 6.5 the heel is a bit baggy and my foot seems to move around a little more than it should given it will only stretch.
it sounds like you might go for the 6 and they'll fit better after they break in and stretch. however, if you're not a particularly aggressive (advanced) climber and the heal is just baggy but not sloppy, you may be happier in the 6.5.