The Terra 2.5 is designed as an all-round slope soarer with f3f performance, it is extremely grippy in F3F EM (Energy Management) style turns but also great at the good old reversals.  The Terra has custom designed airfoils (My own) which I call "JSK" series, the wing has 6 airfoils and have been designed for the CL range the glider was intended for, the Terra has large control surfaces at 25% of the wing chord making it responsive with little control movement and the airfoil is good inverted  as a result the aerobatic performance is great.