Just a suggestion, but look into a Uniden R3.
No arrows, which I agree are nice, but a superior RD in all respects to a V1.
V1 needs to get with the program and have the unit have GPS. Depending on your cell for GPS and custom config is just lame.
I went through this a couple years ago with a V1 and R3. I had both and liked the R3 more for many reasons.
At the end of the day, I sold them as the false alerts are just too many no matter how good the filters are and whatever customization you do. BSM, DCC, autonomous braking, etc. and all the other latest safety technology (that is working it's way down to all new cars now) wreaks havoc with RDs.
Good luck,
Eddie