I have an old fashioned spring scale that I've had for 25 years. About ten years ago I got a digital scale and that number was so inconsistent that I went back to my old one.
I have a health o meter from walmart.. it was about 20, doesnt' do body fat (I decided I didn't want that number to deal with too, and figured it wouldn't be accurate anyway), and it has a 2 person memory (one for hubby and one for myself).
I also have a Tanita and it works great ...paid about 50.00 for it at Bed Bath and Beyond...had it for about 8 years, still working great, would highly recommend that brand