I always return to what is obviously the most important thing to me. Trust, reliability, structured code and files and good service. Foxland have robust and structured themes with creativeness, vision, and support.
EDD, Paytrail Payment Gateway and Paytrail are cheap and functional solution for selling digital products.
@samikeijonen is one of the best WordPress theme developers in the world.
Sami was quick to turn around a feature request as well. That’s what I call open source!