This is the highest mile earning card for general spending. So far, the miles calculation has been accurated and hence have not called in their hotline for any assistance. I was told their customer service hotline is quite irritating in terms of the waiting period but i have yet to experience.
My aim is to accummulate 60,000 BOC Bonus Points to convert to Krisflyer miles. Once i hit this, depending on my experience with redemption process, i will decide if i should continue using this card.