2-strokes are great when HP and cost is your main concern, while 4-strokes sound soooo good and give u more flight time per tank than an equal sized 2-stroke. They both have their pros and cons, so I can't say which is better. Kinda like comparing between a 2-stroke dirt bike and a Harley. The dirt bike gives economical, high-reving bursts of power, coupled with more smoke and thirstier consumption, but u have to be in the "powerband" to harness the power of the engine. The Harley on the other hand is torquey right from idle, great-sounding, and ideal for long distance cruising.

I guess it boils down to individual preference and application.