Zardnaar
Legend
It's pretty amazing that 5e was the best selling edition, let alone RPG, when it only has four years of good books. And in that era theme is still Tome of Foes and the Waterdeep modules.
Tome of Foes was ok.
Best 5E books are always going t9 be subjective. Xanathars, Strahd, Xanathars, Tomb of Annihilation are all generally highly regarded.
5E books are all pretty as well. Huge influx of new players dont have anything to compare them to.
Its mostly the big WotC adventures are kinda junk. Anthology book are generally good.
Post Tasgas its stuff like Strixhaven, Witchlight is mixed, Fizbans good but niche etc.
Good books are Golden Vault, Infinite Staircase and Mordenkainens. Fizbans as well. No as good as the "Golden Era" ones imho.
Most of the books are really mediocre vs outright crap tbf.
Ironically ENworld convinced me not to buy most of the later books. They're dust collectors on the FLGS shelves though. They had 20+ copies if Strixhaven even at $20 few moved.
Zard you hater (I own around 40 hardcover 5E).