Why do you say "... if you had ..." and "... you guys ..."? I'm not Escort, do not represent them and do not push them. I only know that they make decent detectors. For me, though, the best is the V1. Better than any "stealth" install detector too. The V1 wrote the book (actually the patent) on dual facing antennae. The V1 shows you where the "bogey" is: front, behind and even to the side. I know the K40 won't do this (to the sides) because Mike Valentine would have sued since he owns the patent.
How you are so sadly mislead....... Alll of the remote K40 radar will tell you with tone, leds and voice as to where the threat is coming from ie, front of back and the band and the strength it is. And K40 hold the patient on front and rear radar recievers that why Escort of anybody can not supply that to us, Mr. Valentine holds the patient on his dual horn under single case design which does have it's advantages, but let me ask you this........ What good are the side arrows by that time if you are speeding you might as well pull over.....LOL
It's true that rear detection is important. But most of the Escort models are sensitive enough to pick up the reflection of rear radar as it bounces off of objects ahead. It does alert. It doesn't tell you where the alert came from. The same goes for any other detector, bar the V1.
And the K40 and the Escort will get VERY LIMITED detection tords the rear as will the V1 because of the placement of the radar, where as the K40 has a reciever in both the front and rear giving the same amount of detection to each direction.
Stealth, in the form of not being able to see that the detector is there is important. It's also slick. But a good installer, or clever DIYer can make a detector install nearly invisible in this sense too, depending in the detector. However, my take is that I want to see and know all the information to which means that a display is needed. Two lights just won't do it for me. YMMV.
That why the K40 is 100% voice, tone and leds
There is a different kind of stealth; being invisible to the Spectre RDD. Perhaps where you drive this is not important. If you travel in Virginia then you need to be invisible to the Spectre. Only the Escort Redline and 9500ci, and the Beltronics STI series are invisible. Period.
I can see that a stealthy install is important to you. In this respect the K40 is damn good, maybe the best. I just take issue when someone says that it is the best out there, period, without providing supporting details. While it may be the slickest install, I can show you that it is not the best performing and for my money, performance is what I want. Otherwise, I'd have bought an Audi instead of an M3.