I've been enjoying the Flatlanders recordings over the past couple of years. The group is comprised of Joe Ely, Jimmie Dale Gilmore, and Butch Hancock, all west-Texas singer-songwriters. It's in an alt-country vein, but perhaps not quite as "punkish" as you mentioned previously. Though Joe Ely definitely has some occasional punk leanings, with some of his earlier recordings and his Clash connection.
I've enjoyed all of Joe's solo recordings that I've heard - the most recent being the live 1987 recording with Bobby Keyes and David Grisham. That's more rock than country.
And I want to check out Jimmie's solo material as well - he'll be forever cool for his role as Smokey in The Big Lebowski.