Powered flight has been going for just over 100 years and the O-200 has been in service for almost half this period.
But "O-200" is just an engine
size, not an engine
model... Me thinks it'd be better to have some O-200-D specs at hand when discussing the merits of the engine choice; they're not fitting an O-200-B in there... Tried to find some info on the -D but wasn't too succesful except that it'll be "lighter"... Anyone knows more?
Personally I prefer to have an "old-fashioned" engine, rather than a brand new not yet mature bells n' whistles unit. I don't like the numerous single point failure modes and lack of redundancy of, say, the Thielert contraptions. Reliability is what matters most, IMHO!