Strengths: A great flyer, bustles along and looks really good in the air. Mine has an RCV 58 CD (the normal one, not the 'longitudinal' engine.
Weaknesses: Thin wing causes very fast landings. I added flaps to mine. Instantly screws out of outside loops, even if you start inverted. Fine on inside loops.
Overall: Very good, no problems. I added flaps (a good thing to do, as it lands very fast. Also added retracts a year later on. The real one has a fixed undercarriage but I had them spare.