PayPal forex conversion option?

[Crankshaft]

One has the option to charge your credit card (via Paypal) in USD or ZAR.
With former option, your bank does the conversion, with the latter, PayPal's rate applies.

Any experience in which option will be best.
I bank with ABSA.

 

[chrisc]

 

[Crankshaft]

 

[ScottulusMaximus]

 

[Crankshaft]