RE: Help me choose an engine =)
The ones I would suggest aren't the brands you like. 4-C I would go saito 1.00. Two stroke I would go ST .90. A YS .91AC is a great engine. It would be great on the plane your wanting to do. But it's $100+ more than the Saito. If money is not a problem the YS four strokes are awsum.
David