P-80 is a great engine. I just got a refurbished one from JetCat with version 5.10W and put it in my Rookie II. Flew it three times this past weekend and it's performance was nearly as good when I had a P-120 in it. The P-80 consumable the three liters of fuel at the same rate as the P-120, which means I wasn't pushing the turbine full throttle most of the flight with the 120. I feel more comfortable with this combination.

Ken