I got a whistler pro78 3 years ago and haven't had a fine since, i used to average 3 to 4 a year.
Lots of warning with the new poliscan unless its rear facing, when you get nothing until your on it. I reckon the v1 would be just as bad in this situation, as unless your lucky enough to get a laser reflection, there is no way of picking it up.
I'm sure the v1 is slightly better for multinova but the pro78 was several hundred cheaper.