Rate from best to worst for estimating body fat?

Question

1 being best and 5 being the worst...if you know any other methods than those mentioned below please feel free to share them.

biolectrical impedance

callipers

DEXA

hydrostatic weighing

the mirror

Answer 1

In descending order of accuracy.

DEXA

Hydrostatic weighing

Calipers

Bioletrical impedance (the kind on cheap home scales)

The mirror

Answer 2

Callipers and weighing are the best but should be used together.

Forget the mirror

No matter what you are now,  Eat proper well balanced meals, no sodas, fast/fried foods and processed foods.  Fresh fruits, veggies, white meat.

It is better to eat 4 small meals than to eat 1 or 2 larger meals.  

Exercise daily, even if it walking, biking or swimming.  Start out slow and increase speed and distance slowly