first of all, yeah you'll get there faster doin a buck twenty. but why, so what if its a straight away, anything can come out of anywhere and when you think about the big picture when your goin that fast your puttin everybody elses life in danger, not only your own.
with that said, a radar detector is only going to pick up the radar that the cop is shooting. having a radar detector isnt going to stop you from getting a ticket, especially if the cops shooting light because you cant really jam that. There are bumpers on the market that can jam anything but light, their not going to be in a little radar detector that sits on your dashboard and its not going to cost you 300 dollars. Cops shooting radar shoot at your licence plate, thats where the jammers installed is on the top of you licence plate. If you want to get oen theres a link to the website on www.xtremeperf.com
. Two of my buddys have them one on a M3 and one on a IS300, both have gotten tickets from estimation. Going 120 your still going to get a ticket if the radar doesn't say how fast your going the cops still going to be able to tell that your screwin, and may not be able to pinpoint the exact speed, your ticket might be a little less or a little more, so you have to take that into consideration that you could screw yourself on that. But I'll be the first to tell you that i went on a road trip last summer, bought a radar detector thinking the same thing that you are. That if i have one ill know when to slow down and i wont get caught but i was wrong and i got caught doin 117 in virginia.