Zen Racing currently have the Hirosaka (made by Speed Passion) 17.5 on offer at £35.99. That's a Speed Passion motor for under 36 notes; you'll struggle to find a better price new.
I have the Hirosaka 13.5 and am very pleased with it. Runs strongly - doesn't fade badly at the end of a race - and has been easy to set up and run. HTH
