I am looking for feedback on 2012 Ozone C4 15m. I am a heavy rider (220 pounds) and looking to complete my quiver of 2011 C4s - 11/9/7. I have flown 13m and loved it but it would have to much overlap with my 11m. Do you loose much turning speed and agility when going to 15m? Do you gain much low end? I am not interested in other Ozone models or other brands. Just looking for a feedback on 15m from people who have spent some time on it. Thanks BigZ