I have no experience with the PL-600. However, the PL-660 is a GREAT radio for the price. My 660 has a few microprocessor-related quirks that don't diminish my experience one bit because I really don't use much of that electronic overkill. As far as being a RECEIVER, it outperforms any of the Sangeans I have owned-INCLUDING the 909. Others might disagree but I think its a killer portable radio. Kaito is the best place to buy because they are the authorized distributor and can better take care of any problems you have.