I got the head liner with sound assassin for Christmas and just put them in so not a lot of time with them, but I don't think they will help much above 70. I thought they worked great at lower speeds and maybe have some affect up to about 65, but beyond that the wind noise from other places is...
I've had mine almost 2 months and 1500 miles--Steering could be better and sometimes when I call my wife it says it is calling, then says cancelled, but then it connects. What is even weirder is that it only seems to happen when I call my wife.
might be the stupidest purchase I have ever made...
About 1500 miles on mine and it wanders a little. It really depends on the road and whether or not the wind is blowing hard. The other day I had about a 90 minute drive in very gusty winds and it was not fun.