Recently I've been seeing this quote floating around, attributed to W. Somerset Maugham: "The best style is the style you don't notice."
And we all go, "Yeah, very deep, man." I said it at first, too. But then I really considered it, and my blood began to seethe.
No! A thousand times, no! The invisible style is the style of the mediocre. If I consider my twenty favorite authors, I consider twenty distinctive styles. Rip a page from the center of a novel by Ursula K LeGuin, by Kurt Vonnegut, by Vladimir Nabokov, by Jeanette Winterson, by Frank Cottrell Boyce, by Anthony Burgess---I would have a fair shot at figuring out who wrote that page, based on the prose style. And while I read these authors, I luxuriate in their unique sounds and textures, celebrating their choice of words, turns of phrase, sources of allusion.
How could it be otherwise? With experience, we expect to be able to tell Van Gogh from Cezanne, Liszt from Chopin, Led Zeppelin from Pink Floyd. Should prose fiction not be just as distinctive at its highest level? Recognizable style is a mark of greatness.