Ipe comes in high spine too. I have several spined 120#-125#. They make top notch ultra heavy arrows for the big animals - and are a great arrow even for bears over bait; where you know the shot will be short. Right BH and they'll easily crunch both shoulders on even a large bear, and can penetrate end to end!
Might add that I flex each raw Ipe shaft several times, in all directions, before I make them up. I've found a few that had brittle spots. These break readily during the initial flexing. If they pass the flex-testing, I've never had one break later.
Ed