The Ford Factory radio is hard to beat. There is a slight audio improvement in some of the newer radios, but in a 69 Mustang you will never be able to tell it unless the motor is off. You will also be able to pick up weak signals from distant cities better with the new radios. But if you just want something for driving around town, the old Ford radio is the way to go. The trouble with the 70s era Ford Factory radios is they all require external amplifiers and better speakers to get the good sound. So if you want a cheap radio with good sound but no fancy features, go with an old factory one. It is fairly simple to add a MP3 player input or bluetooth receiver to the old factory radios. I have done it on mine and for others in the forum. Good speakers will be needed no matter which radio you end up with. A nice 70's radio is about $50, some are cheaper, some are more. External amplifiers are another $50; some are cheaper, some are more. A bluetooth or MP3 input can be installed in it for maybe another $50. A good case of beer is only $30, so go for it. Get them all and get it done!