I read "White Noise" by Don DeLillo for my book group. I tried to read "Underworld", around the time it came out, and chose to abandon it. I know five other readers who had the same experience with "Underworld". I was therefore relieved to discover that "White Noise" is a more accessible, amusing and readable book. That said, there isn't much of a plot and most of the book details numerous inconsequential, every day occurrences and conversations.
There's much to enjoy, however my initial relief gave way to slight boredom with the meandering nature of the book. The book's characters are an interesting bunch that all centre around an extended small town family. As the "story" unfolds several themes emerge - death and mortality, consumerism, technology, and authenticity - which are playfully explored. It is only in final third of the book there is any semblance of a conventional plot and the death theme, that runs throughout the book, becomes more explicit.
Recommended if you enjoy clever and digressive satirical novels with various levels of meaning to ponder.