When all things are considered, I still consider Osage #1, but there are several species of trees I would take over Osage when I can find a rare, good stave. 
#1  Ocean spray. I believe this is about the fastest wood I have ever worked. But hard to dry without splitting, hard to find a decent size stave. 
#2 Purple plum, this is my all-time favorite for its flexibility, stiffness and workability. 
#3  Chinese elm, like hickory it tends  to be somewhat hygroscopic but if kept around 6% it is super fast and virtually unbreakable even with massive violations. No need to chase a ring or even worry about cutting across the grain. The city cuts them down all the time but the trunks weigh over 1,000# and it is virtually impossible to split so must be sawed.