RDs are kinda like Voo Doo, you gotta have faith to start!

This is an objective subject. I prefer the V1, it's my decision.
This AM, I was approaching a gradual hill on a daily driven backroad, get hit on Ka while still on the incline side. It increases to 2 then 3 before I hit the crest. (should have snapped a pic, it was beautiful and scary) There were 3 troopers at the next intersection quite a ways away. They were all facing forward and left their radars on as they wrote the requisite tickets. V1 still picked up the waves.
I pulled up behind a WRXsti, noticing he had a V1 as well. As we accelerated the count went to 4 and the arrow was forward. (now the initial 3 were side and rear) Around a corner ahead of us, turned a city cop, radar blaring K band. The unit was able to seperate the 4 and locate their positions as we drove away.
That's why I personally prefer the unit. There doesn't seem to be anything out there with simlar capabilities. Pairing it with the Stealth One Unit in BMW is required. That thing is fantastic.
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2001 e53 4.4i Sport, Nieman Marcus Edition. Stealth One.
2013 e70 3.5d Stacked, Custom