New to the world of 30cc size aircraft.   I bought an 71" slick

Plane runs great and came with some Power HD 1501mg servo's.  The rudder wasnt' working so I ordered a Hitec hs-985 to replace it.  It has become clear as day how much better this hitec servo is over the HD's.  The speed and precision of the Hitec crushes the HD's..

so I want to replace the rest of the HD servo's on the ailerons and rudder.  

How do the hitec HS 5625's compare to the 985's?   I see the 5625's are about half the price... 35ish vs 65 ish a servo... I'm not hardcore 3D... but I do want it to perform.     thoughts?