I planted cowhorn peppers, which I'd never seen. The suckers are huge, each pepper 5-6 inches or more and over an inch in diameter. Each plant is producing tons of these really hot things (around 30K scoville units). They're really growing well here in Zone 7. So if you like lots of hot, I can definitely recommend this old variety.
Now, if I could just figure out what to do with them all...