Hi JOEM423,
Yes, I would personally recommend to purchase a GOOD set of pedals (Virpil, vkb,... ) anything that is metal construction with good sensors, unlike airplanes helicopters are inherently unstable and a fine control of the tail rotor is a must.
While Dozer is damn right, I also think that when it comes to controllers you only use curves when either they are subpar or they are broken / misbehaving, if they are properly working controls I strongly recommend not to use any as you are going to loose finesse.
Isaac