I've been looking to buy a new bow for some time now. I came across the bowmaker Zdzislaw Prochownik, who happens to also be the principal bassist in Winnipeg. After I inquired about is bows, he sent me two bows: a 119g pernambuco bow and a 123g massaranduba. Both bows are exceptional: great curve, excellent balance and a real life to them. I ended up purchasing the massaranduba as I preferred the feel of it and it made my bass sing. I really liked the feel of the wood. I was not familiar with massaranduba before.
If you're looking for a bow in Canada, particularly a Canadian-made bow, check out Mr. Prochownik's work.