Just bought one of these last week for 120 dollars.
Found out Crutchfield had it for 100$ !
been using it now for around a week now.
very quiet in town
almost TOO quiet I thought
I thought it might be a defective unit
I was running it with my Cobra 650 g and they were behaving very well together
almost too well !
the only time they would set each other off was on calibration at start up.
I thought it was a case of each detector blanking the other out with filtering until I ran into some actual police radar today.
the spx 4300 appears to be a tad more receptive then the 650 g but JUST a tad
it could be where I mounted each too
the new units are a low emission receivers and are a upgrade to the esd series which aren't bad for their price still at around 40 $ to 80 dollars+