Eckrich is a good sausage, no doubt. Never had Holmes, will have to get my Houston connection to bring some up on their next trip.
On your next trip up to North Louisiana you need to pick up some Hightower sausage (made in Claiborne Parish) and Down Home (made in Stonewall LA). Both are excellant locally produced sausages. Both are really dense, well seasoned, not a lot of water. Smoking them make them even better! Because of the low water they freeze really well too so they'll be good if you take some home and toss them in the freezer for a while.