We used Regnow, Shareit, RegSwr, Moneybookers, Plimus and now discovered that the best of all is PayPal. Personal account, no fees. To few people use our directory submission service and want to pay with CC, so I think the best solutions is paypal AND something else for credit cards....like a second Business Paypal account
Use http://www.e-junkie.com to sell with 2checkout, paypal and many others. Many other features, check it out!
I keep hearing good things about 2checkout... but what advantage does it have over the regular Paypal's ("Buy Now" button) shopping cart? This accepts paypal as well as cc... even when buyers aren't paypal members.
E-junkie also supports Google checkout, not to confuse with 2checkout! I don't know how they handle multiple languages though. Maybe make a button for each language and each product?
i am using both 2co and paypal to process payments. many clients insisted that they wanted to use credit card so i gave them an extra option to their comfort. 2co is just a backup to paypal.