WhatdoIknow? I drive a VW Jetta.

Chances are if you drop the coin on a 4-stroke and it's a lemon you take the hobby store owner's family hostage and make demands. If you buy a cheap 2-stroke and it's a P.O.S. you shrug it off and bad mouth 'em on forums thereafter.

4-strokes also swing big honkin props that keep the ball rolling on flywheel effect alone when transitioning. That, and they tend to be better designed and better made.

But in most cases it is pilot error (or ground crew - which is the same feller for most of us). It has been my experience that two strokes are fussier, but then they cost 1/3 of a similar 4-stroke on a given model.