So looking to get back into motocross it's been ten years since I've last been on a track, been pottering about on trials bikes since but it's just not the same. So decided I'm going to put myself threw my trailer ticket and get a motocross bike but what I'm not sure...wanting to get a 250 but 2 stroke or 4 stroke? And is there much difference between Honda, Yamaha, Suzuki, Kawasaki? Any info would be much appreciated.