I bought the K40 RD850 for traveling down a particular stretch of Florida highway on the way to work but since I no longer have that gig I have little use for this great detector so I thought my S2K buds deserved first dibs on this unit before I place it on EBay. Suggested retail price is $299. I paid $249 in May after spending nearly two weeks of research determining what I felt was the best detector on the market under $300.
Once I had made up my mind, I called my brother (State Trooper) and he agreed the three best units out there were K40's newest unit (this KD850), the Valentine One and the Escort Passport 8500. In his words, "you can't go wrong with any of them."
New, the Escort sells for about $265 and the V1 runs well over $300. The best price I've seen for the K40 is around $245. I have all the original parts which includes those used to hard wire the unit.
I don't want to get into a "my detector can beat up yours" discussion but I have been very pleased with the performance of this unit but truth be told, I'm in the slow lane now and no longer flirt with triple digit speeds for s*its and grins so might as well sell it to someone who probably needs it (you fellas know who you are).

For three quick pieces of opinionated material, click below. For a personal observation, this unit has beeped (Turnpike) as far away as 2.3 miles ahead of a parked FHP Camaro and I thought all the time it was falsing on me. Pretty impressive.

http://k40.com/Technical/pdf/Monitor...es_Article.pdf
http://cars.ign.com/articles/512/512955p1.html
http://k40.com/Technical/pdf/MUSTANG...IAST_RD850.pdf

Paypal preferred, shipping should be $5 and no more.

 

ttt