I am not exactly sure why this is so, but as to tone, in my experience there is less of a difference between a larger price range among baritones than any other size of ukulele, provided that they are solid wood of the same species. I mean to say that mahogany exhibits its particular tonal properties as distinguished from spruce, for example, in a baritone quite clearly. I once played a Martin (likely from the 1960s given the interior stamp) side-by-side with a Kala solid mahogany baritone. They both sounded quite good; the Martin was a little better, richer I would say, but not by so much. I can't say the same about similar comparisons among sopranos. My considerations in deciding on a baritone would focus on tone wood and, especially, playability.
If you like the "signature sound" of a particular maker, I believe chances are you will really appreciate it in a baritone. Same with playability concerns like neck profile and such.
I've played a few Wise ukuleles, albeit not a baritone, and was very impressed with them. I also am fortunate to have a Ko'olau baritone (spruce top, koa back and sides) that is splendid.
These are just my observations. Others may have entirely different experience.