if its a old beaten up mustang, this will sound weird but GET IT!!!!!!!!!!!!!!!!!!!!!!!!!!! its really fun to fix up cars. if you dont have the time just get a new car. and if the mustang is restored get the stang
You can spend about as much for a near perfectly restored classic as you would for a new car. So it depends on what you like. Also, if you're a do it yourself type, older cars are much easier to work on than newer cars, at least for simple repairs. No electronic ignition, no computer diagnostics, just plain mechanics. If it was me, I'd go classic. I've wanted a classic Mustang ever since I saw the chase scene in "Bullitt"
No matter which one you get, you should research common issues that might require replacement to compare if you can afford to fix the car if it breaks. E.g. Brakes, rotors, bulbs, headlights. Most of these things seem like they would be simple to fix but depending on the age/make of the vehicle, the costs can be ridiculously high.
Are you looking for a fun ride on the weekends or something to drive rain/snow/sun every day?
Classics are wonderful but they're also not meant to be an every day car. It would be a travesty to use such a difficult to find vehicle every day, especially if it's in pristine shape, because it severely depreciates the car's life and condition.