...after a bit of listening...
I love Gas Huffer. I really can't believe I had never heard of them and that they never struck it big. I guess rockabilly punk is a niche market.
Skin Yard is tolerable. They are definitely grunge.
At one time I thought I really liked Skin Yard because I loved the only streamable song: Psychoriflepowerhypnotised (Live). But then I found out that the song was Loser Bar by Loveslug, which is also labeled incorrectly. I assume they got mixed up since they were released together on a split single.
The Walkabouts are boring.
Beat Happening is alright. I really like Calvin Johnson's vocals sometimes, but I prefer his later projects: The Halo Benders and Dub Narcotic Sound System.