i have a YS110, a YS63 and a 46FX, And belive me, the most reliable is the OLD ex pylon racer osfx! using tower muffler and 20% nitro it rules!

anyway, if it is better to compare thrust, it turn things more complex, because I don´t know if there is a way to calculate it from RPMs and props (thats the info I have benn collecting)

Update: Thrust calculations can be obtained from the same datasheet asmund post here.... lets see...