Stiks are great. I will always have at least one in my hanger ready to go at all times. I bought a Great Planes Big Stik 40 used and it has been one of my favorite planes. I have used a bunch of different engines on it: K&B .61, Fox Eagle I, Tower .75, ST .61, K&B Sportster .65. I have also enlarged the RCM Liddle Stik plans to .40 size and it flies great with a ST .40.