I got rid of my old non-digital scale because I felt like it wasn't accurate, but then found out that my new digital one was even less reliable. It will change readings as much as 3 or 4 pounds within minutes. I wish I had kept the old one.
I agree it makes sense to stick to one scale, but with mine, I'm not sure that's even going to give me a consistent reading. I have to say, I like the ones at the doctor's office. I don't like what it has to
say, but at least I believe it!