I'd love to give you my advice, but you make it very difficult. Your questions are decent, but many of them are related and could be answered in more depth if they were in the same thread.
Also, the search function will yield the answers to all of these questions. Its fine if you'd like to ask them again, but please at least do a little bit of homework before you ask.
I'm sorry to see you have put me on your ignore list. I presume more will be added to that ever growing list as you seem to put anyone on it who has given a reply that "you don't like".
Grow up. That kind of attitude will not make you many friends.
As for scales, I use this one: http://www.amazon.com/Escali-Pound-K...s=escali+scale








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