If you are looking for a second plane and an actual kit, not an ARF, I would recommend a Sig 4-Star.

Better yet, get yourself a Stick for a second plane and built the 4-Star for your 3rd plane. Clip one rib off each side and use a .46 on the 40 size or a .91 on the 60 size. You'll be hard pressed to find something better for raising your flying skills.