Ive only owned one Super Tiger .45. Ive gotta say it was much more powerful than my OS 46. The only issue I see is you really need to break it in well on the ground. I prob ran half a gallon through it before I thought it was ready to fly as it was VERY tight when new. So tight I couldnt get it to turn over. If you run into this problem, remove the plug, drop a little fuel in the hole to lubricate. Then turn it over with your starter for a good 30 seconds or so. After a couple of times doing this, it should be nice and warm and allowed cyclinder to expand, replace plug and try and start it. Then break-in.

Despite the intial start-up / break-in process....I would buy again. Very strong motor, and inexpensive.