A Stik type plane makes a great second plane. It takes you to the next level of planes with flatter wings(low /no dihedral )unlike your trainer that has a good amount of dihedral . This means you can practice more advanced aerobatics and get familiar with a plane that stays where you point it unlike your trainer that is difficult to perform aerobatics and will always want to correct itself to an upright position. A stik will allow you to slow down for slow fly-bys and that also makes it easier to land. They aren't much in the looks department but it will be a plane that you never get tired of or really outgrow and it makes a good next-step to improve your skills so you can move on to mid and low wing sport, aerobatic, and warbirds.
Good luck !
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