Jeremy,
If you have the money go with the speed, it has a higher rev limiter, should have the hydraulic clutch and new GP1000 engine map and ohlins and most likely the new solid amuminum swingarm. Speed differences between the models is not something I can talk intelligently about, but I do know that the speed has a higher rev limiter than the cannibal, and the motto has a higher one than the speed. But I am not sure how much more usable torque the high revvs give you.

 

I've talked to the tech guys several times about this.

Speed good all around power
Blaze Great all around power use with after market pipe better top end
Moto Great low and mid range for MX comes on strong and hard

I told the tech how I ride and he suggested the Blaze for what I do.

My dealer want $60 to remap. The kit from Optima is $500 so I could do it myself and have some trouble shooting software.

Hope that helps

Smitty