need a new scale, old one is way off...

preussen101

As you can see by the topic, my scale is in need of a replacement. I'm not very happy with it considering that it's not a year old yet and it's giving me readings anywhere from 3lbs below to 3lbs above my actual weight! It has a BMI calculator on it which is what sold me on it, it's the Weight Watchers Glass Body Fat Scale. Anyone have a digital scale with BMI they favor? I may look for a replacement soon.