It's a 51cm and I'm 5'6" or maybe 5'7"

I was set on a Pake and I thought the 53cm might be a bit too big. I figured it'd be easier to make a bike slightly too small fit than a bike that's too big. It feels fine though. Like I said, 35 miles and I woke up the next morning feeling like a million bucks...

Hmm.. hopefully I didn't blow it..........