10kgs for me.
SS I reckon as long as you're consistent with the scale you use it won't make much difference.

My biggest challenge isn't really eating the wrong food (though a daily choccie fix probably isn't the best) it's stopping eating when I'm not really hungry. Like the snacking at night or in the arvos waiting for DH to come home cos I'm bored.
Exercise is also a killer. I used to be fit and active, but since Nate, it's all just too hard.
I love being strong and fit. Darwin however is absolutely horrendous weather to want to get fit outdoors in....might have to talk DH into one of those Wii Fit thingies.....