You know what guys? Sometimes Pprune p
es me off. Here's someone who asks a question and some
here have to sound off about how irrelevant this is. Well, Chuck, what hyper-complex all-singing, all-dancing spaceship do you fly then?
We could argue about what constitutes a 'complex' or a 'high-performance' airplane until Chuck Yeager descends from the clouds. These definitions, like all in aviation, have been introduced by someone in an office - live with it. And answer the OP's question, which I do here: immediately after my PPL for 'complex' (C172RG), a couple of years later for 'high performance', i.e. C182, etc.
PS: btw 99% of N-reg PA28R-200's are NOT good enough for the high-performance sign-off as they are rated at 199BHP. Must be some insurance thing. The FARs stipulate more than 200 for that....