What is the best way to do payments

We've processed payments two ways, but there might be others (this is what I know personally but hope it's helpful): (1) You can set the form up to collect CC information and then manually process using card details via your own payment processor (i.e. if you have Donor Perfect or another system that allows you to process contributions manually). (2) You can connect your PayPal account and process payments through PayPal. It will allow them to fill out the form, then direct them to PayPal to complete the payment portion. You'll get a notification from PayPal with the contribution and also from Formstack with the completed payment and form information.