They all appear to be 'screwdriver' antennas of one brand or another, for bands lower than 10-11 meters. If you have need of such things, I can say from experience that they certainly do work. They also mean a definite 'change' in driving habits!
When you start thinking seriously about using one, you will have an 'enlightenment' about antenna mount sizes! Think very huge, strong, and NOT mounted to the body of a vehicle (unless your vehicle used 1/4" steel for body panels). Just the motorized coil will amount to something around 25 - 35 pounds. That's a lot of weight/momentum to 'handle' in just normal driving.
That's just the 'practical' side of those types of antennas, says nothing about costs. Do your self a favor and sit down before looking at prices.

- 'Doc