in my opinion you are better using a credit card to pay thru paypal than a bank account or balance in paypal in my experience. if paypal dont then you can usually do a complaint etc through the card company with more success as the seller has to justify which is usually a tougher process than paypal's process.
again this is based solely on my experiences.
been with paypal since early 2002 and never had an experience that left me out of pocket, but i do know people that have suffered at their hands.
their is an inherent risk in any transaction that doesnt occur within arms reach :P
