The 25fx is a good choise and so is the 40FP or 40LA, However you will enjoy the ease of slow high alpha flight and steady hovering when using the black master airscrew 10X5 vs the 9X6 that the 25 likes. And if you over prop the 25 FX the engine will just get hot and loose all power. NO it's not a big deal if you deadstick your PBF it will just fall like a bag of fishing sinkers! BUT! if you happen to be flying over a property line or maybe over a muddy cow pasture , man thats a dreaded walk. No expert here just my 3 cents worth.. BENDER