I was hoping the thread would move on to a debate. I have digs of other a/c, in particular the Weedhopper which I think is a great a/c for price and design. However, if they coloured it silver and called it the "Silver Streak", it would come across as a more macho plane. With regard to the Jabiru engine, the main issue is the top end and it's frequent replacements which will probably never be solved. It costs about 6 grand to do the job say every 350 hrs which is 30 grand to get to a major overhaul at 1800 hrs. Rotax is supposed to get around 1200 hrs out of their heads and based on what I read in the forum are about two or three times expensive, and take about $30,000 to 1800 hrs as well. Then the cost of a complete overhaul of a Rotax would be more than a Jab. So cost wise the Jab engine should be cheaper to run, even if it requires more mainentance. Issues like breaking cyl head bolts is not rocket science to solve. Except for the Jab 1600 engine, I would consider one in an a/c that really appealed to me, addressing and repairing those issues like broken bolts and doing frequent leakdown tests. This conclusion is also based on availability of parts which is good for the Jab but going to be non existant for Rotax 447/503 which is in a lot of a/c that appeal to me.