I am still amazed that RobbieTunes rides such large frames.

I am 5'8.5" and the 3 bikes I ride are 52,54,56cm. The 52 and 54 both have a 54.5cm tt and both have a 70 to 80mm stem. The 56cm has a 56 cm tt and it has a 60mm stem with Randy bars. It definitely has a more upright riding position. The 52 and 54 feel very similar. When in the saddle the front axle is forward of the bars in my sight line.