You don't want to know the cost of the ones I'm using. 5985 and 5955. The 5985 was about $75. The 5955 replacemnt, the 7955, is about $90. People make fun of my huge torque servos but I just don't want to worry about the throttle servo failing on me. For 3D 5-10 feet off the deck it's heavily relied upon servo. I'm sure the 5245 would work great but I just don't have the comfort factor....which is important to me.