Hi guys ;

I'd like to buy practice engine. Why I say "practice engine', cause I'll drive it only for practice and I'll buy racing engine as well.

What would be the most reliable, fast and minimum maintenace engine which also representative enough for racing practice, not just for playing around parking lot, but practice on circuit.

Other main concerns are easy setting and cheap spare parts.

Could you rank it for me : OS, Top, Rex, Fantom, Orion, Nova Mega, RB.

Thanks