Plenty of people get just as good of results with a PC, it may just take a little bit more time. Myself, as much as I know a cyclo/flex/rupes are better than a PC, I just couldn't recommend a $350+ polisher to somebody that wasn't sure this was their "thing".
I say get a PC, if you enjoy polishing upgrade to a better unit. You can still get plenty of uses out of the PC whether it be 4" pad duty or sealant/wax application.