The quality of the product is very high. Contacts are fixed, do not wobble. The straight shape is perfect for lighter, which are integrated in the ashtray compartment (eg the VW Golf). So the power supply can be plugged into the cigarette lighter, without having to adjust around until it fits then times.
Reasonable price for money (unlike the original from Samsung, I've thrown in a few days in the ton, also because of the unfavorable curved shape)
Cable could be a bit longer, but that's usually too short for Car adapters.