while the 4 strokes do have more power down here on our side of the equator everyones switching to 2 stroke because they have had enough fidling with their YS. i don't know about you guys but i had to pour hundreds of dollars at me 140L before it ever ran the same. everyone (well everyone besides a few die hard 4 stroke buffs) are switching to 2 stroke beacause they WILL get more flying done with a 2 stroke. and not to mention they eat less fuel and run less nitro. if want power be prepared to have to pay alot of money in thge long run. if you want power and reliability go 2 stroke.

now that may not apply for everyone maybe its just down here in Aus where 4 strokes don't want to run reliably.