Well... guess I'm being lazy in a couple respects here.
I'm looking for someone that already has purchased and installed one and is happy with it, to save me the homework of doing lots of research.
As to why I want one.... I do have about a 15 ft. cord, and can spread while I'm driving if very careful and go slow. Would like to get away from the hassle of a tethered unit to avoid pinch points, and make things a little simpler/cleaner. If my reasoning is flawed, please let me know.
No.... I probably will not spend $175 for a unit.