I voted for the T.T. Stick only because I've had 2 of them.
Great fliers but are covered with "shelf paper".
My vote for a second plane is the World T-34 Mentor, an excellent
intro to low wing planes, made for any 46 to 50 size engine and goes together FAST.
Their covered with Ultracoat and cost $129.00 from most mail order stores. Set up your dual rates to 25% and 75% and go from there or use expo.