im looking into getting my first bike soon just dont know what one to start off with. i have always had dirtbikes and quads and all that motor stuff so i know how different bike levels can be huge jumps in throttle and handling. i also ride a harley road king around just getting used to the bike on road feel if that means anything at all.. but my dilemma is between bikes like the gs500f, gsxr 600's even maybe 750's, and the ninja 600's... im not one whose getting on a bike never riding something before, but what would be best for me to go with if i want something that i wont outgrow or want to move up from by the end of summer or anytime soon?