any of the mentioned bikes are ones you want to consider, sv 650, ninja 250, or maybe even a buel blast. the best thing to do is to go to the dealers and see them in person and actually sit on them see which one feels good to you. it being ur first bike look for a used one once you are ready to buy. and as tempting it is to get a super sport bike like the gsxr or the cbr etc. don't do it not if you have never ridden one before because you will be setting yourself up to die.