I'm ordering my first pair of bib shorts and Im not sure what size to get.

http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

I've read the sizing chart, but still, that is a std chart for amazon and I dont know if the Peal iZUMi's run big or small or what. I'm 5'11", 175lbs, 32-33 inch waist. I was going to get a medium, but then i worry they might be too short, but I dont want to get a large and have a baggy pair of bibs, thats just silly. Also, does any of this stuff shrink when washed? Same question applies for a jersey. I know some people might say to go to LBS and try on stuff and get a pair there, but I have a gift certificate to amazon, so that is where I am going to purchase. Thanks for the input.