If you're doing vinyl, make sure to go to a quality place. I've had buddies who went the cheap route either doing it themselves or going to small sketchy shops and it actually ruining the paint.
Plastidip is cheaper and removable, however if you're planning on doing the whole car, it may get kind of pricy for what you're getting. An 11 oz can is like $10.
At the end of the day, it's your car and you'll do what you wanna do, but IMO, both look cheap. Keep it OEM.