Yeah, too many good peppers to choose just one. That is very true!!!
I forgot another favorite annum. Also, it is landrace from where I live, the Canary Islands.
It's "Pimienta de la puta la madre" (Mother Whore Pepper). Incredibly sweet, tasty, like a candy. The heat is variable, some hot like a Jalapeño pepper, others like a Serrano pepper. The plant is also very productive.
Semillas.de has seeds for sale on their website (for the European people: last year I put a good handful of these seeds in the European seed train)