I went with the larger size, mostly for the taller head tube and less exposed seat post. I think I'm going to need to swap the handlebar for something narrower and shallower, but I want to get a few miles on it before I make a decision. Now, if only these darn t-storms would go away....

Funny story: I was building it last night. I can't remember what I was doing exactly (QR maybe?), but I was leaning over the front wheel, facing the back of the bike. My shoulders fit between the handlebars....bars too wide maybe?