I will not disagree that Robert Heinlein led the pack, however, at least I admit there are others who were part of an outstanding generation of SF writers. The likes of which we will probably never see again. Sounds to me like you are rather narrow minded in your experience and viewpoint, which makes it easy for me to dismiss you, just as you dismiss the other writers I mention.
Yup, read'em all. Have'em in my collection of at about 1000 SF and fantasy titles. Compared to Heinlein, Asimov is fluff. Blish is better than Asimov, but still not up to Heinlein. The best thing Asimov wrote was the short story "Nightfall". It comes "close" to matching Heinlein at his best, but for book-length writing, Asimov's writing is almost one-dimensional compared to Heinlein.
Been reading SF for about forty years, and been subscribing to Analog for at least thirty.
"Sounds to me like you are rather narrow minded in your experience and viewpoint, which makes it easy for me to dismiss you, just as you dismiss the other writers I mention."
See paragraph above.