Sweet Chocolate from Johnny's looks like it would round out that Sweetie mix of snacker peppers quite nicely. From the pictures, at least, it looks distinguishable from Purple Sweetie:
http://www.johnnyseeds.com/vegetable...seed-579G.html
Aura, Lipstick, and Glow look like another good sweet pepper mix. There are some new bells in the catalog, too. Johnny's has some great stuff. My biggest apprehension about ordering from them for market sales is that all the other vendors get the same catalog, so I risk someone else selling the exact same product.
Also, I got this link from another tville post, Harris has a small sweet pepper that shows stripes at immaturity. I think it is another component of a mix that would set the product apart:
https://www.harrisseeds.com/collecti...t=276850442257