If by the 250sr, you mean your '91 KDX250, I have and still do ride both. The 250 when dialed in seems to have more power and top end. But, once I rode the 220, I rarely ever ride the 250 any longer. The 220 has plenty of power for trailriding and handles way better. The 250 is still a great tractor of a trail bike, but the 220 feels a lot more nimble.