Yes, In my experience the 200x is faster. I really think it is because you have better control with the clutch shifting and you loose less power. I also have never been a fan of the 250sx. Some people swear by them though. To me, they are just a maintenance nightmare. But to each their own.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90