Well so far I have to say that the STi is a great detector. The only thing I don't like about it are secondary issues like the audio alerts, dim control of the display, and Threat mode display.
Beltronics your STi will be perfect if you can do this to it:
1. Make the audio alerts function the same as the audio alerts do on the Escort X50. I like to know how strong the radar signal is without having to look at the detector even if I am already slowing down after I hear the first alert.
2. Give us the option of being able to change the brightness of the display without going into program mode. The auto dimmer is nice, but at night time I do not like it because it gets my attention when it "flickers" from adjustments made by brief sources of light from the outside. For example a truck's headlight beam from behind hits the sensor and causes the display to get brighter briefly and then it goes back to dim, I don't like that.
3. The threat display should show multiple sources of radar on EACH band. I like how the number next to the band indicates how strong the signal is, but this should be changed if my #1 suggestion is implemented. Instead of the number indicating signal strength in threat display, make the number indicate how many radar sources are detected for that band.
If these changes are made to the STi, it will be a PERFECT detector in my opinion. I think most people would agree with me.
However, these are all secondary issues. The primary issue is to detect police radar the best without false alerting to other sources and so far the STi is REALLY good at that! When I am shopping for a radar detector I get the one that is the best for the primary issue, but having everything in a detector would be nice.