Yea true enough - I really like numbers though, makes me see that I am actually accomplishing something. Like seeing the numbers on the scale remain unchanged for a few days, but a change in body fat ... this would atleast let you know you are making progress.
But like you said, I could go to a gym around the area and probably have that done, heh.
I have a Tanita. It's pretty good. But it's true, the numbers can be off from the true body fat and it can vary a lot depending on the time of day you take it and your hyrdation level. However, that being said if you measure yourself under the same conditions, you can use it for relative measurements which can be used to gauge progress. Hope that helps.
Save your money. Body fat scales that claim to measure resistance in your feet are completely inaccurate and you can get a better number by standing nude in front of an honest person.
The gold standard is underwater weighing but you need special equipment and training. Second best is a TRAINED person with experiece with calipers...you cannot do it yourself.
Forget gym trainers, infa-red readers, calipers in untrained hands and any electrical resistance method...waste of time and money.
Some online approximations are worth your time IF they account for frame size by including wrist, ankle, or pelvic size measurements. Not great results but not too bad either.