A fully loaded J430 Jabiru will out perform an empty 172 and do it for less than half the cost, faster. End of competition.
What else does 120 knots on 20 litres an hour and carries more than its' empty weight...?
I often have the pleasure of one of those restart 172SP's. Sorry, I just cannot help feeling comfortable, safe and relaxed in it. Y'know, the Jabby does not give that same feeling - and guess whats usually holding the circuit traffic these days... its not a 172, a Skipper or a 152.... its a Jabby .....
They don't come near a REAL aeroplane