In the two years that I've been using DiNotte lights It's common for me to get a comment about how bright they are when I use them during the day as running lights. Typical comment..."I could see you from a mile away".
They're worth the price.
I personally prefer to keep my lights on a high steady mode rather then flash. I believe it's easier for oncoming traffic to judge my speed, distance and position while in a steady mode.
The price of being safe on the roads...$400 plus. It's worth it.