I did a search for a similar question, but nothing came up, so my apologies if this is in the wrong section.

Im 5'6.5" with a 31" inseam.  I have seen the sizing chart(link below) and Im looking for help on sizing as Im between a small and medium.  The thing that concerns me on the medium is the standover height (31.7"), but I wanted see what 057 owners have to say.

sizing chart
http://www.alibaba.com/product-detail/Hot-Sale-Full-Carbon-Frame-Bicycle_60679333085.html?spm=a2700.7724838.2017115.1.4c227410ayZRFG