Passport announced their new 9500ci remote radar that includes their new ZR4 shifters. Selling for $2000 installed if they are even really available. Other than stealth install it looks like it can ignore a false if you drive by one 3x without slowing down.
ZR4s look a little smaller than ZR3s and are supposed to be better at LA detection. ZR4s alone look like they're selling for $600.
http://dvice.com/archives/2008/01/ces_escorts_pas.php