Aldo you are right that this subject has been done to death but Shags-j asked for advice about what sort of aircraft he should buy. When I do a hazard assessment at work I need to look at all the possible risks that a particular task may involve and whether the risk can be reduced or eliminated, I look at flying in a similar way, you look at the risk and I look at reducing them, I'm a very low hour pilot and I know more than likely the risk is low to fly a Jab powered aircraft if maintained correctly and I certainly don't know the statistics of JAB V Rotax but from what I have seen and heard around my training airfield there seems to be more problems and more intensive maintenance required on Jab engines than Rotax, which as you said you need a professional to do this work to feel safe and know it's done right and that equates to more costs for my first aircraft.
When I now look at my own safety and look at my low hours and my abilities of handling an aircraft safely to the ground in an emergency, a Rotax powered aircraft is the way to go for me, it's a mind thing, I just feel more comfortable that the fan will continues turn than I would in Jab engine plane, that's my personal preference from a low hour pilots point of view to Shags-j
David