I have two addenda to Mark D.'s "Veggie Burger Fix" list.
First is the veggie burger at Houston's. I tried it because of yelpers' recommendations. Thank you! It was excellent. It's a homemade, black bean-based patty. It's moist (although I hate that word. But it is.) and a perfect texture -- it doesn't feel meaty in your mouth, but it's substantial. It's just right. I wasn't a fan of the fries, but I didn't need to get to those because the burger was so big.
I also liked that the server enthusiastically supported my choice of a veggie burger (at a ribs and burger place) rather than poo pooing it. I realize that is server-specific, but props to my server for singing the praises of the Houston's veggie burger when I ordered it. Not having to defend my dinner selection makes a difference in my overall enjoyment of my meal.
Thanks to the yelpers who suggested this! And thanks to Houston's for having a REALLY good veggie burger on your menu!