I don't have a lot of experience myself with bows, but here was my track. I started playing DB a bit over a year ago. My first bow was a glasser fiberglass. It worked for me for intonation work and still does. Later, I bought another bow which appears to be a pernambuco bass bow. I know nothing about them. The guy I bought it off of told me he paid $500 for it. I liked the balance of it compared to my glasser and the tone differences were huge. It amazed me, the difference in feel and tone. The pernambuco is a lot warmer and softer sounding as well as having a neat ability to get various nuances out of the instrument. The glasser, which is a horse hair bow too has limited dynamics (loud to soft) range.
Anyway, the reason I am telling you all this is without having the experience with the glasser, the differences of the bow would not have been as apparent. it is a night and day difference, but still, the subtleties I wouldn't have known if I hadn't gotten my feet wet with the glasser. I also wouldn't have built a preference of what i like, don't like and what I am looking for in a bow without having the experience. Just some food for thought. It would be a bummer if you spent all that money then in 4-6 months of plying, tried a bow and was like "wow, I wish I had this one instead" due to now having experience using a bow and have a preference for "chasing the flame" so to speak.
Anyway, here is a thread that may interest you: Shen Ophelia VS. Finale bow
I was highly interested in the Shen. Never played one though and was going to get some demos shipped to me, but I don't need that now.
Good luck with your bass bow adventure