I'm 5'9" about a 30" inseam..for those Zesty riders out there, I'm curious what size you guys selected. the 2015 models (Zesty) size up at 40cm, 44cm, 48cm and 52cm. My previous bike was a Kona Coiler Primo (M) and my other bike was a Trek HT 3900 17.5". I'm thinking the 44cm (conversion is 17.3") should be good. According to their chart I'm right in the middle cusp. Is it better to size up? I'm 44 and not planning to be playing in the NBA anytime soon.