O my god! Gentleman! Plz! The best, the better, K band, Y band, bla, bla, bla,,, IT DOESN'T MATTER! Get this in your heads boyz.
You may have the most expensive RD out there. If the cop (or "LEO", that's the first time I hear this one...good one) knows what he's doing, and most of them do, you're toast. A radar beam is spread out like a cone and goes out for "infinity", spreading it's patern into la la land until it finds some surface to be absorbed, or reflected on. If the surface is suitable to reflect at the correct angle, it will come back to the radar antenna which will calculate time vs space - distance = speed bla bla bla, you get my drift. Basically, in most occurences, the RD will not capture the radar's (let's call it dust) dust for more than...1/2 a mile to 3/4 of a mile. Considering your moving at bla bla bla feet per seconds, and that the "LEO" is only activating his radar for a 1 second burst, and only at vehicles he has visually targeted as moving beyond and above the speed limit, the chances of avoiding a radar are very minimal.
If the "LEO" leaves his radar on all the time, #1, he doesn't know what he is doing and # 2, he probably is lazy and really wants the ignorant high milers.
I've caught (yes, me too) I don't know how many speeders who had high end RD and told me that it was garanteed to be the best , bla, bla, bla.
On top of that, where I work, they are illegal and we seize a lot of the high end brands. The fine is over $300 for a RD + speeding tick.
Also, I don't know if you are aware but cops now have what we call RDD's (radar detector detectors). It's an instrument independent from a radar unit which will indicate to the officer if the vehicle coming is equiped with a RD. This gives the autority to the officer to stop the vehicle and demand the RD. If the driver refuses, the officer has the authority to search the vehicle for it and charge the driver accordingly.
Bottom line, it doesnt matter if you paid $10 or $500 for your RD. If the guy at the other end knows how to use it, you'll get caught. So better to pay less, if you really want a RD.
And how does one really know they avoided a tick when using a RD? You really can't tell if the "LEO" was using the radar or doing up his notes.
IMO, speeding on a bile is the best and surest way of getting killed...but heh, who am I to judge, I'm only a LEO trying to save a few lives........