It is amazing what makes a speaker sound bad outside of a poor design. If it is a good design and the cabinent is solid and has decent drivers it is poor internal wiring and cheap crossover parts. I have moded may speakers with better internal wiring and better crossover parts and have had huge results in the right direction.
Speakers free of grain, glare and steel?
$2,000 or less used/new speakers free of grain, glare and steel, but with detail, extension, imaging, and tonal accuracy and balance? Acoustic Zen Adagio, Merlin TSM MME. Gallo 3.1, Frafrotski SE? Most speakers are competent, some are outstanding, a few deliver magic. Which speakers are the most musical and easy to listen to, rising to the top of a crowded field given their price point, and the most "forgiving" of their associated components? Which have magic?