have got good experience with the rs pro as have been using it for a long time now. the xtreme team also used one for the 24 hour race and dispite shorting it out twice

against the prop through the race and lots of magic smoke escaping it never missed a beat for the whole event. is good if you ever race in the wet as when the motor starts to play up with the sensors getting moist it just switches to sensorless so you stand a much better chance of finishing a run.
it is a lot smoother than previous speedos i have run so defiunatly a big thumbs up from me about it. buy with confidence especially as the one person i have seen have trouble had his warrenty sorted out very quickly. tekin are very helpful and also on this site there is a Q and A section from Randy at tekin so any queries are answered correctly and quickly.
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Nathan Ralls HPI, Custom Blitz,
www.piraterc.com mr-o foams
woop woop racing officialy keeping team toe out inline