I used a V1 in 6 One Lap Of Americas. Never got a ticket,and not from lack of trying. The V1 was great. Had a K40 in an '87 928 Porsche for a while. It worked well but lagged way behind the V1 in alert times. That said the V1 does false more than I would like. The number of radars tracked and the direction they are coming from feature has saved me from several elaborate traps where LEF will show you one radar and hide the second further down the road. The V1 lets me know that there is still one up ahead and to stay slow.