Here we go again,

Its not what drives your machine but how well you fly that counts.Have a look at the world Champion.
Yes the YS are frustrating initially until you spend the time to understand them .

A bloke at our club recently lined up his EP machine for take off advanced the throttle and the thing caught on fire .......complete right off by the time the fire extinguisher arrived.
When people asked what happened his reply was I don't know it never did this before

So there you go...... fly what you want to fly and be good at it.

rgds