I made the links, used collagen casing, followed the basic recipe fairly close, 5lb batch. Then divided the meat into two parts. One part just added lots of fresh garlic, you can smell and taste the garlic in these. The other part I added 1 tsp of Smoke Serrano pepper, this spice is hot and expected that if I added more it would be too hot. It added some hottness after you eat it (after burn), but not as hot as I had expected.
I did long links, mistake. Should have done shorter links so I could move then some, had them hanging on rods. The bottom of the links were overcook, not too bad, but a little dry. Had my temp probe about halfway between the top of a link and the bottom (near the heat source). I pulled when it said 152F.
Next time:
Make sure I rotate the links around so top and bottom heat about the same.
Going to add fresh hot pepper next time.
Over all, I like both and when I finish this batch, I will make some more hot ones