I aborted at 90 knots once and it was per the carriers policy of 100 knots being the high speed regime. It went fine and we stopped in plenty of time. I wrote up the malfunction and the flight cancelled. I was later advised that I should not have aborted and that it was a nuisance message. There is no winning in the situation because the flight cancelled and was investigated by flight ops and maintenance. The monday morning quarterback concluded that I should have continued even though it was policy to abort. That taught me to just do what I thought was safest because someone WILL have a contrary opinion, whether that person is evaluating your performance is a crapshoot.