Excellent design, programable and user friendly.
I had the chance to compare it to a beltronics RX65 Pro (same price point) and an old Cobra XRS 9430.
The RAD 450 has little bit better sencitivity and range than the XRS 9430.
Compared to the beltronics... The rx65 is much more sencitive and better range but annoying as well because of to many false alerts... Every minute.
The RAD 450 is quiet and most of the times goes off when its something important.
My wife likes it and soon I will get a second RAD450 for my truck.