i had a 9300, and every feature on it stopped working.
it never played mp3's like it said it should. maybe 2 songs on each disc i made would play half way through. it would overheat durring normal use durring the winter, and it would just be too hot from just sitting installed in my car durring the summer and as a result - normal store bought and burned cds would just have a garbled static sound instead of any resemblence to music.
and to make matters fantasticly awesome - on the motorized faceplate, the display actually stopped working. so now i cant even see the freakin radio stations.
so basically, i had a FM radio with only presets to the stations that i had set to the buttons before it broke. this all happened in a 5 month timeframe. and from the get-go, mp3's didnt work and it would overheat.
RF headunits imo - are complete crap, and i will never buy their brand again - unless they are the origional ones.