I had a friend ask if I could create a donation/membership page for their non-profit using PayPal. The site is built in Joomla! 3.x so I naturally thought of an excellent extension like JoomDonation. However, they wanted a number of tweaks that meant modifying the extension which I hesitate to do. Enter RSForm! Pro. It's pretty much been my go-to form builder on any Joomla!