Okay......
as far as Radar Detectors are concerned; here is my experience. I have owned them off and on since 1981.
I use the Escort Passport 8500 currently. It is newer technology than the Valentine One. They are both the 2 finest detectors money can buy. Yes; the V1 has the arrrows. Are they really necessary? No. Not in my opinion. IF your detector goes off - you slow down; plain and simple.
You must be aware however; that if you get 'pulsed' by a cop shooting KA Band (instant on) Radar, and you are driving alone (and speeding), you will get pulled over. You are always most susceptible when driving alone without other traffic. The beauty of having a long range sensing detector like the V1 or Passport 8500 is the fact that they can pick up a radar signal at such a long distance. I have actually picked up radar as far away as 2 miles +. This is possible on flat land.
I received a ticket last March in my MAZDASPEED when I was traveling alone on a back country road (83 in a 50), when I came out of a turn, and the state trooper was cresting a hill coming toward me. It was just he and I. He fired his KA Band at me. I was caught. Sure; the Passport went off. I was maybe 300 yards from the trooper. So; it can happen. A good lesson; when traveling alone; highway or country road, you best be careful. If you get pulsed - you are toast.
The only way around beating a KA Band instant on radar gun, is traveling on the highway with other cars. What will be happening is your V1 or Passport 8500 will be picking up pulses as the Sheriff, Trooper, etc,,, is pulsing the cars in front of you. This will give you ample time to reduce your speed. There is no cure for KA 'Instant On' Radar. Make no mistake.
Is the V1 worth $100 more than the cost of the Passport 8500? I don't think so. Remember; Mike Valentine (V1) was the co-founder of Escort (Cincinatti Microwave). Now it is just known as Escort. The only test where the V1 outperforms the Passport 8500 is the one in Car and Driver Magazine. Word on the street is that Mike Valentine is good buddies with the people at Car and Driver. Who knows? Their both the best offered. Here is a good link...
http://www.radartest.com/