Yes am implementing those two but I need to know which type is best to implement as in paypal we have different types(standard, pro and more) and also in authorize have different types(AIM, SIM and more), but I dont want to process payment on my side but on each gateway's site.
I hope you get it. Again my problem is not using which but which type(pro or standard) like for paypal will let me process payments on paypal site and same thing for authorize.net.