Identical experience. 6.5" on the dot, so firmly a 7. Thought I'd just try on the 6 to start to see if felt a bit too snug, but surprisingly felt great - *but* I could get it to shimmy around on my wrist when I tried to shake it (ie. a jogging movement). Tried on the 5, felt a tad more snug than I'd like, but ultimately decided to go with that as it really stayed put.
Have been wearing it for the past hour, feels pretty good... the band is quite pliable so I'm not feeling constricted or anything. That said, just took it off and there's a clear outline of the band on my wrist. I might change my mind after a few days and exchange for a 6.
Surprisingly, they had watches and a good assortment of bands in stock at my Apple store, including braided and normal solo in charcoal. Visually, the braided band looks really cool and the colors pop more, but I found rough to the touch so opted for uber-gumminess of the solo.