I haven't reached my goal yet, but I'm consistently losing 2 lbs/week so I'm on the way. I stay at the very lowest range that SP set for me (which is 1200-1550 calories/day.) At 1550 calories/day I'd probably be losing half as quickly. And it isn't really a SP goal, 1200 calories/day is pretty commonly known as "the lowest you should go," for women to lose weight at a safe and steady rate.
current weight: 138.6