Kilti
some sharks dont have turbos
yes the 280c or F28c will have a higher price as the turbo does make quite a difference in the uk
with my F28a sometimes i could not get it in the garden when the wind was wrong ,my F28c did get in most of the time ,My F280fx always got out and in whatever the weather
also check if the tail rotor is fitted on the correct side as early F28a models had it fitted so it used to blow the air the wrong way they started to put it on the other side of the tail boom and you need less tail pedal and so you got more engine power to the main blades
although when you get a few hundred hours on type you will learn how to eek the extra power out of the ship like dennis does
send pm if you want to talk somtime