Just ordered my Bel STI yesterday and got it today. I thought there was some 10-14 day wait for it from beltronics. I can't wait and see how this unit works. May sell my X50 if this thing works like it is suppose to be but i'll still keep my V1. I now like spec/tech mode instead of expert mode since i used it for months now, i can easily tell if it's false or true alert. The spec/tech mode is not accurate but it is very close. I can't believe that the box was this heavy. I'll read the manual tonight and start using it tomorrow. Waaaaweeeee...... Bel for that lightning fast delivery.