Im 15 years old, and have been skateboarding since I was 8 years old. I rode my friends bike (a Next) at the skate park for the first time last week. I only been to the park with it 3 times though. I found BMX to be a lot more fun then skateboarding. However, the bike is in horrible condition and it is a little too small for me. Any suggestions on a good starters bike?