I like the 16 foot Milwaukee tapes, I only use a longer tape if I actually need the added length, then it is usually a Stanley Powerlock. I have no idea on the accuracy, I'm more concerned with repeatability, so if it matters, I just use the same tape for a whole project. Keep an eye on the slop on the end, if it moves back and forth more(or less) than it's thickness, or if it sticks, you will have trouble repeating the same measurement.

