I'm trying some Mariachi Peppers this year. Mariachi is a 2003 hybrid, and I got the seeds from Tomato Grower's Supply.
I've got the PMMV virus in my garden soil, making it impossible to grow bell peppers and causing poor production in mild OP hot peppers like Poblano and Anaheim. I do real well with hybrid non-bell sweet peppers, though, such as Gypsy, Carmen, and Bounty.
Since Mariachi is a hybrid non-bell and similar in appearance to the sweet hybrids that grow well for me, I think it may work in my garden. Mariachi is similar to Santa Fe Grande, but Mariachi has only about 500 Scoville units as opposed to 5000 for S.F.G. Mariachi has thick walls, and I think it might be real good in salsas and for chiles rellenos.