Hi Allan,
I recently replaced the original Sensor antenna (no wingman UHF add-on ant) with a Razor upgrade head. I also installed the Sensor Pro amplifier as well. Prior to installing the amp, the reception was somewhat improved over the Sensor. That is to say I received more stations with the Razor and the signal strength was improved.
If I had installed the wingman onto the Sensor, I feel that combination would have been as good or better than the Razor. However, since the Razor receives signals equally well from the back of the antenna as it does the front, you will potentially receive more stations without having to re-point the antenna.
The down side to the Razor is the fact that it is primarily a UHF antenna with some high-band VHF capability, It can not receive channels 2-6, but the Sensor antenna can. All (most) of your major digital TV stations broadcast on the UHF band, so there are only a few stations scattered across the US that you would not be able to receive with the Razor antenna.
The real whipped topping on the TV antenna pie is the Sensor Pro amplifier. It makes the difference between being able to receive distant / weak stations and not getting anything. The Sensor Pro amp will work with either the original Sensor antenna or the Razor antenna.
Hope the above is useful info and worth every cent you paid for it!
Dave
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Dave, Barb, and Paisley the Wonder Wiemeraner
Was - 2015 3160RL Legacy Edition & 2014 F350 6.7l PSD SRW Platinum
Now - SOB