I learned to fly on one 6 years ago, then converted it to a group A after a year of microlight flying.
The C42 is a wonderful aircraft. Responsive, forgiving, easy to fly. 80hp beats the 100hp in my opinion. Extra power unnecessary, burns more, not as smooth.
I heard a story from a friend only this week who is learning to fly on one. He said ... "Just got to do a couple more solo hours and Came in with too much airspeed and didnt bleed it off in the roundout. Bounced on the runway and tried to save it rather than going around. Bounced 3 more times which got progressively worse with nose high attitude. Thought I was going to lose it but somehow it recovered itself."
Must be very forgiving indeed!!!
The only downside is the same as the upside! It's so forgiving and easy to fly, I personally consider it a little dull. It is Also lacking in any space to put anything.