Which 125 with A1 FS?

Tagchen Com! I’m new here and I’m in need of information. I’m 15 years old and think about doing the FS A1 at the beginning of 2013. (By the way: I read, in early 2013 there is a new regulation regarding LKR, could I explain more about it? Thank you.) Now I have the agony of choice.. In the more detailed selection have made it: The Aprilia RS, RS4, Yamaha R125, KTm 125 Duke. Can you start with those ‘what’?Criteria for me are: -low maintenance costs -security -Al The sound should not remind me of ‘n moped’.That’s it, by the way: Screw as with my father (passioned motorcyclist) on his Enduro or Fireblade. vlG Evan