RE: Nitro trainers...
Good Luck in your new hobby. Bigger is better and easier to fly and see IMO, Kadet, kadet sr etc. Not to be Mr. gloom and doom , what every you choose, pick one where replacement parts are available in case you need them. When you get going and start looking for a next step airplane , might I suggest a 4Star 40 or 60 kit. Build it and take almost all the dihedral out. Great flying airplane that will do aerobatics, plus you will learn the take-off of a tail-dragger