Escort radar, corded (not wireless) with GPS. And a $500-$600 laser jammer. If your not gonna do the laser jammer, don't bother with the radar. You either have an advantage or you don't. The radar detector will make you drive a little quicker and the escorts are so effective, it will lure you into a false sense of safety.
Once you fully put your trust into the radar, a cop will hit you with a laser you never saw coming, and depending on how many times the escort has saved you, you could be going "go to jail fast".
The escort X50 8500 is awesome, but I'm pretty sure its been updated a couple times now.
I went from Cookville, Tenn to Lakeland, Fl in 8hours and 50minutes. I stopped 5 times for fuel and to walk my boston terriers and still averaged 88mph. The same trip took me nearly 11.5 hours in a caravan, lol.
Had a escort 8500 with a escort ZR laser "shifter". Had a state trooper pull out and come after when I pasted him at 105mph in GA. The entire time it was saying "shifting rear, shifting rear". I got zero warning before he hit me as I went past an overpass, I actually saw him through the passenger window as I past him and stood on the brakes to drop from 105mph to 60mph (in a 65 zone, lol ). When he got to me, he just sat adjacent to me. Then suddenly he put a side bar light on me, and past me really slow. Then suddenly, he TOOK OFF like a mad man. I figured he just didn't want to deal with writing me a ticket at 12:30am. 2 minutes later, I pastes him on the side of the road with a Acura MDX pulled over, so... If he had got me, he def would have at least pulled me over and given me a ticket. But I think the fact he couldn't get a reading on my until I was going less than 5mph BELOW the speed limit forced him to move on ( this is prob where most cops would just lie and say they clocked me at (best guess here) and refuse to show me a radar/laser reading).
After that.... I drove even faster and felt like no cop could get me on speed unless the paced me from behind without me knowing. The system was scary good. The escort picked up radar from super far away, sometimes over a mile away. In my area, I found, our FLA troopers and my local police had zero laser guns. I never got hit with laser locally. So... I sold the laser jammer to help pay for other speed parts.
Went I sold my srt4, I bought a G35 coupe and the escort came with me. About 3 months later I got zero warning from a cop with a laser gun and almost got a ticket for going 42mph in a 30zone. I reseached it and turns out, my local police updated there entire fleet with laser guns. I was forced to pack up my 8500 and not use it because without a laser jammer, your just setting yourself up for a bigger fall when the laser cop hits you when you think you can't be caught. If you buy a cheap laser jammer, samething. Read all the reveiws and don't spend less that $500 on a laser jammer. Since radar is old school stuff for cops, even an old 8500 X50 is still pretty good, but the GPS models will make your daily drive so much better with it NOT going off ever time you pass a walgreens or convenience store ( with radar activated power opening doors ).