The Yamaha has a barky, very crisp, reactive engine character that is extremely fun on low-end. Midrange is quite friendly (for a 125) for lugging riders, and with just a couple stabs of the clutch lever it is back up and screaming. Top-end pull is strong but signs off a little earlier than the KTM 125 SX. The suspension of the Yamaha is its strong suit. The KYB SSS fork is very plush, comfortable, and consistent over the course of a long moto. The rear end of the bike matches the front end; it is plush, moves in the stroke, and feels balanced even when the track gets rough. The chassis is light (of course, it is a 125) and is fairly easy to get into ruts and corners.