It appears that the big 3 all have strengths and weaknesses. If you were designing the perfect detector, how would you do it? These are some of my thoughts for 2 units:
The standalone unit:
-Two antennas for directional information. Valentine really has their act together with this.
-Arrows of course.
-A face plate that can either be left on the unit, or remotely mounted for a stealthier install.
-A USB port to hook up to your computer for tweaking. This presents the maker with a chance for extra revenue as they would be able to charge for the software to modify the standard RD settings. Meanwhile we'd probably be excited by the opportunity to change filter parameters to reduce falses or increase sensitivity.
-Online software upgrades. The makers could charge to download the upgrades which would be inexpensive (for them), and quick and easy for us.
Unit with GPS integration
-Make a unit that works with a built in GPS system. This would be the ultimate solution. The RD would lack a display, and would some how integrate with the GPS system which would display arrows and any information that you desired (number of threats by band, frequency, etc.).
-The GPS unit would be able to save bogey locations and give a warning when approaching a common speed trap.
-If there was a way to transfer GPS info to the computer and back (memory card), a list of speed traps (compiled from others) could be kept on your GPS unit, and you could be alerted when you approach one.
Note: I know that the GPS unit would cost a fortune. At the same time, the suggestions for the first unit could probably be done at about the V1 price.
Note 2: I just noticed I'm in the Bel section, not the general section which is more appropriate. Sorry about that.