On track you will find mostly:
Runnertime, Tornado, Roga, R&B, and some drivers mix there own blend....
Off track (parking lot bashing), modeltechnics fuel is also quiet popular (cheap), and it is also returning to the track, because they changed the contents which makes your engine tunable...
M7h have you ever tried teflon in your fuel ?
I am experimenting whit this, someone i know works in the aircraft industrie
and is blending fuel for me .
He uses teflon 2 mu thicknes and some other high qwality turbine oils
it runs like all other fuels no noticable difrence exept some carburator tuning.
the inside of the engine is now extreemly smooth.