I'd recommend just about anything written by Thomas Disch, Robert Sheckley, or Jack Womack. Sadly, you'll have to root through used bins to find them these days.
Disch wrote the children's story _The Brave Little Toaster_, but is best known in SF circles for _Camp Concentration_, and was firmly located in the more literary-minded '70s New Wave; heavy subject matter, but worth the investment. He was a published poet, and it shows in his evocative, beautiful prose style. If you can, also track down any of his short story collections, as he was master of the form.
Sheckley wrote in more traditional SF areas than Disch, and was more of an absurdist satirist. _Immortality, Inc._ and _The 10th Victim_ are good starting points. Pro-tip: Douglas Adams was quite the fan of his.
Womack wrote the "Ambient" series (_Ambient_, _Terraplane_, _Heathern_, _Elvissey_, _Random Acts of Senseless Violence_, _Going, Going, Gone_), a loosely-connected set of novels concerning an alternate near-future America. They are bleak, bitter, blacker-than-black satires that will leave you emotionally scarred, but I love them, God help me.