I have seen more than one plane get augered into the ground mostly because the pilot was flying a plane that his skills did not yet match. Steer cleer of scale warbirds and scale aerobatic planes for your second plane. A Tiger, 4-star, or Ugly/Super/Ultra Stik are all excellent next step planes. Constant chord (not tapered) wings won't surprise you with an unexpected snap roll while making a landing approach or during a turn to final.