I've gone 7 - 8 years withOUT a RD.
My old V 1 was one of the first ones with no laser.
It sat in a box for years until this month.
I traded it in on a new one at the V 1 web site.
On day 1:
I got .3 - .4 miles of warning on CW transmissions from police cars angle parked in driveways.
It falsed a lot less than I remembered....
It showed me how intense the enforcement was in NH during bike week.
I also saw how the patient use of instant on at 2:45 AM can render any RD useless.
I was Instant on-ed at about 200 feet, 3-4 led bars worth. Make no mistake that at 2:45 AM I was the only traffic for 10 - 15 minutes, and if I wasn't doing the PSL, I'd be ticketed by the LEO's ambush.
I would have been OWN3D.
What the RD did do, was tell me how I was "clocked" and for how long. A possible tool for preparing a defense.
So I'm back in the RD fold, mostly using the instrument to observe the enforcement tactics surrounding me as I drive.
Be carefull and always use common sense when you drive........nothing is failsafe.