OK, strictly based on falses and distance detects, and just to demonstrate that I DRASTICALLY improved my detector with this purchase.
The route for these tests were my daily commute. Going north at 4:30 - 6:00 in the morning, I left my house in Colorado Springs and took back roads to I-25. Took 25 north to 225, then 225 to my work. Returning in the evening (after 6 p.m.), I took back roads to E470, then Parker Road (SH 83) south to Colorado springs. It's 75 miles one-way.
Morning Northbound Commute
Bel 715i in City Mode: 35 false alerts. Two real alerts. Long range: .6 miles.
Whistler Pro 73 Highway Mode: 8 false X-band alerts. Two hits on K-band safety radar, one LEO detected.
Whistler Pro 73 in City 1 Mode (reduced X-band sensitivity): 4 false X-band alerts. Two traffic safety radars. One K-band save overhills @.6nm. One Ka band on a cop in a parking lot of the courthouse, and one X-band detect on a cop. Long range detect: 1 mile.
Afternoon Southbound Commute
Bel 715i in City Mode: 19 false alerts, no true detects.
Whistler Pro 73 in Highway mode: 5-10 false x-band alerts (almost all were from banks, and it was hard to tell if they were separate alerts or the same one fading in and out) and three false K-band alerts (or real ones where the LEO was not visible)
Whistler Pro 73 in City 1 Mode: Two false X-band alerts and one real X-band detect at 2.1 miles over two hills.
So the Whistler does better in HIGHWAY mode, with full sensitivity, than my old Bel does in City mode (it only has one). And in City 1 mode, my falses are reduced to a negligible amount. I get good distance in over-hill detects, which is important here, and have already saved an $80/2 point ticket.
I'd say it was $110 well-spent!