I am a newby. I am looking for a sport bike but I don't know which one will fit me. I am 5'7" and average built. I have tried a couple bikes but haven't had the time lately to try more. I need some help on which sport 600/750 has the lowest seat position. I have tried a CBR600RR and I can't even tiptoe on it. My friend has a 749 and I fit but it is out of my price range. No one seems to be able to tell me which bikes have the lowest seating height.