I studied abroad in South Africa for 5 weeks a few years ago, two peppers that come to mind are peri-peri/piri-piri/birds eye, and the peppadew/piquante. I had a peri-peri based sauce that had a delicious flavor and a surprisingly strong heat to it, while I had some peppadews on a pizza, they are very low heat but a wonderful sweet flavor, would be perfect for stuffing! I plan on growing both this year (got my seeds from refiningfirechiles.com) The thing with peppadews is that actual peppadews are trademarked, meaning the company is the only one that grows them and they don't sell seeds, so the closest thing I found is the malawi piquante, which apparently is practically the same thing just grown in a neighboring country.