24" vs. 26" for Muni?

What are the benefits/drawbacks of the two sizes? I looking to buy one for my son, who has just gotten into riding and is advancing rapidly.

24" MUni vs. 26" MUni
24" vs. 26"
24 inch Vs. 26 inch

12 years ago Kris Holm was asking the same question. It’d kind of funny to see that:
24" vs 26" unicycle

The list of threads on this topic is long.
Just search and you’ll find hours of reading.