Vismund----I would probably make the choice on the who sells and services X brand in Sweden.

Now that being said, I feel you have missed out on one of the top performing engines on the market that will save you 2 lbs (about 1 kilo) of weight, and those plane are not exactly light. My choice would be the BME 110, on stock mufflers I don't think any of the engines you mentioned are stronger. The exception may be the 116, but I have no knowledge of it and I believe it is heavier.