I enjoy slow flight, and autogyros can certainly give this. I even have winged aircraft that can fly slowly, but seem to be alone here on that. The average model flyer seems to want to zip around the sky at high speed. I have seen model DC3s for example flying at about 500 scale miles per hour, and no one seems to mind, but it looks odd to me, and quite unrealistic.
The slow possibilities of autogyros is one of their attractions, if high speed is wanted build a P51 Mustang or similar, but I got past that years ago.
Colin Duthie