In my opinion, knowing your current level of bf% isn't as important as being able to accurately assess changes in your bf%.
In that respect, the most reliable method I have found is the one used by US Armed Forces.
You need three measurements and a formula.
The measurements are Height, Waist (at navel) and Neck.
(The Neck is measured at the point just above the collar bone.)
Then plug those numbers into the following formula:
BF% = 495/(1.0324-0.19077*(LOG(Navel*2.54-Neck*2.54))+0.15456*(LOG(Height*2.54)))-450
The above formula requires the measurements to be in inches. If you want centimeters, just delete the parts where the Neck, Height and Navel are multiplied by 2.54.
I have found the results to be as accurate as any of the fancy X point caliper tests, and, imo, leave less room for "cheating".