As far as what I heard, French bows are the best, and most expensive, about $10000.
I have played on student quality bows, and I have played on more expensive $200, and CodaBow. The one big difference I experienced is ease of play. More expensive is easier to play, and it’s more forgiving. They produce a better sound too.
Since I have been playing with better bows, my overall bow hold is better.