Robin ATL/JPX
I owned one of these little aircraft with a JPX engine, and it was a delight, albeit a little underpowered. They either had the JPX single mag engine or the Limbach twin mag with a little more horsepower. Both my, and Pierre Robin's son Christophe learned to fly in one and there is more than a passing similarity between what we are seeing now in terms of LSA aircraft and the little ATL.
As far as the JPX engine is concerned, it was based on the VW lump and is fairly bullet proof. The only caveat is that the power with two up and fuel is a little marginal.
I bought mine with the idea that, once my son had passed his PPL, he would want to hours build at reasonable cost. It is very economical and solo is probably one of the most affordable little aircraft out there.