My favorite was "Things That Aren't" by Michael A. Burstein and Robert Greenberger. It's about the creation (and use) of a device that can put someone into their perfect view of reality. Well-formed characters, some growth of character, a reasonable plot, and the science spurred but didn't dominate the story. Humor at times, and an appropriate ending.
I also liked "Crackers" by Jerry Oltion, which while more science-dominated did take an in-depth look at the main character (and stuck with just his viewpoint), and "As You Know, Bob" by John G. Hemry, a fun "meta-story" about how a story develops as a writer and editor haul it through several different sub-genres.
"Queen of Candesce" by Karl Schroeder (the serial) continues to be enjoyable and more about the main characters than about the world - I'm suspending overall judgement until it ends but right now it usually equals the favorites of the issue.