I was around for the shoe discovery actually. It changed my life.
The last time I used Waze in this area (Huntington) was a couple years ago and it was basically worthless. Maybe word has spread a bit better since then.
I have K band turned off on my Escort Passport. Waze and the Escort have saved me more times then I can imagine. While Waze is very good there have been countless times when it wasn't marked on Waze and they were actively shooting Ka. Radar detector also helps when they are up ahead of you running speed, Ka can be picked up miles out and give you fair warning. Least out here in the flatlands of Florida.
K band falses are actually mostly from blind spot monitors.
You need a detector with better filtering. RDForum is a great site to learn all there is to know about detectors, etc.
Off the top of my head some of the better K filters belong to the Radenso, Stinger VIP, Uniden R1/R3, and even the newest version of the Valentine One.