Blasphemy! The Thrawn Trilogy is still outstanding decades later. As are the two that came much later, specter of the past and vision of the future. Rogue Squadron and Wraith Squadron were endlessly entertaining, and basically single handedly codified everything we know about starfighters and space battles. Tales of the Bounty Hunters were wonderful short stories about the group of hunters assembled that day on Vader’s ship, and they are all loosely related in that regard. All the other Tales books are fun too, some better some worse of course. Then if you want to get really old school you can break out Splinter of the Minds Eye, by Alan dean foster, who ghostwrote the Star Wars script with Lucas. Splinter fleshes out a lot of the original ideas from ANH that never made its way to the final cut, most notably the Kaiburr Crystal. It has a lot of weird ideas in it and is pretty jarringly different from the rest of the Star Wars canon, because it was one of the first EU novels written and the universe hadn’t really been established yet.

I miss the good old days of the SWEU and I’m still salty Disney trashes it. There’s tons of great material in there.