I haven't personally flown the RV, but I would rather recommend a good second plane such as a Sig four-star, or a Goldberg Tiger 2. They have longer tail moments that will let the plane track through the air with more stability. The four-star is a tail dragger, but with the long tail moment, it will be easier to handle on the ground. The Tiger 2 is a trike setup, just like your first trainer will be, making it easier to make the transition to a low wing. It can be set up as a tail dragger after you master low wing flying. I think the RV is a good plane for someone that has already mastered low wing flying, and might not make a good choice as a second plane.

Jesse