I am short of krisflyer miles for the next trip. Could someone please guide would it be better if I transfer my velocity to Krislfyer for top up or AMEX rewards point to Krisflyer for top up. I know Velocity runs promotions to transfer to velocity but not sure if similar is applicable for transferring out of velocity (to Krisflyer). Would doubt if AMEX runs anything at all such as bonus points for transfers etc. thanks all!!