paypal is ok if your using it for ebay cause i suppose it gives you protection from both sides (or is supposed to) bitcoin being non
reversable can also be a bad thing if your getting scammed.
In my opinion, in terms of convinience, paypal is better than bitcoin because you can send the payment quicker than bitcoin, deposit and withdraw instantly direct to your account, and shop online with paypal. However, in terms of limit in transaction, bitcoin has more capability to do such transaction as it doesn't requires limit. In my point of view, the reliability of the wallet depends on a person's need.