both things can used also for more things but what i recommend you is that you need to use the paypal method as a online paying method and when you use bitcoins make sure you make money with it dont spent it on bullshit,.
i have no paypal account at all therefore i have no experience of paypal , i am using bitcoin only, but i have heard from friends that paypal is not universal with so much high rate and is also banned by some countries, therefore i think it will be risky if some one is using paypal for transaction purpose.