I am totally addicted to Poffenberger's sausage, packed by the Bellville Meat Market and available at some HEB and Specs locations in town. Their jalapeno cheese summer sausage is amazing.
The downtown Whole Foods has an amazing sausage counter. I thought I read when they opened that they brought in a full-time sausage maker. Lots of interesting combos available there.
Peach Creek Farm sells a wide variety at most local farmers markets. I have only tried the breakfast sausage, but it's good.
If I need some quick smoked links for the grill, I grab the V&V from HEB. The Elgin links are always available, too. And I'll always have a soft spot for Earl Campbell's hot links (whatever happened to that mustardy secret sauce Earl used to sell?)
Mandola's makes a nice fresh Italian sausage with plenty of fennel.
Where do you get your sausage? What kind? Road trips to small-town processors are encouraged.