Hello FatOrangeKat. Talking from experience here. I absolutely hate my Super Tigre 45. I spent much of my time at the field messing with that stupid engine than I did flying. I am not exaggerating at all about this, I go to the field for at least 5 - 6 hours when I go and spent about 20 minutes setting up, get the engine started and taxi out for it to stall when I turned to take off, bring it back start it up and repeat the stall. Then me and 3 -4 others would try to get that STUPID Filth Flarn Filth engine set and finally get it done and be able to fly it after a couple hours. Trust me this didn't happen because of lack of knowledge of the engine or experience of flyers. That engine was a nightmare. I have sent it back twice and it still does it. I can never go to the field and make a minor adjustment on the high end to meet the needs of adjusting temperatures. It is always that big of a nightmare. Then I got the Magnum 46 and it is a kitten. I purrs. Now I have definitely noticed the power is a much as the Super Tigre but man was the engine easy to break in. I have it since January and have only had to turn the high end up or down very sparingly do to weather. I absolutely swear by the Magnum. Now the only problem that I have with the Magnum is there are no seals on the muffler. So you have to buy some high temperature gasket maker from an auto store, about $5 a tube, and put it on the ends where the bolt goes in and comes out and where the two halves meet. Besides that, that is my only complaint. If you don't put that gasket maker on it you will be cleaning up a big mess. The muffler leaks like a stuck pig. So after my autobiography, lol, I highly suggest the Magnum.