I got the Black/Yellow one Kiwi Rider. I was torn between getting a bigger bike around the 500 or 600, since I am 6'4". But I feel good riding the 300. The 500 only sits .2" higher then the 300. The 600 sits higher by almost 2 full inches. But I wanted to get comfortable riding until I move up. I only ride on a military base and around town. The is no highway near me so don't really need a bigger bike.