I'm trying to buy a fixed gear bike and I was looking at bikesdirect.com. They had the motobecane track bikes selling for a good price, but I'm just wondering if it's actually going to be a good and durable bike to ride daily. Any thoughts from you fixed gear heads out there? As far as sizes goes too, I'm 5'1, so I was wondering what frame size would be best suited for my height. I was thinking maybe a size 49 cm frame would be right for my height? I don't know much because I'm new to this so please, if you can give me some tips on this. Thanks