I’ve used rear lights from Dinotte for many years, and I strongly recommend them. I’ve had police officers pull up alongside me at stop lights - and once while I was riding - to *thank* me for using those lights, because they are so clearly visible. I use them day and night.
In addition to the performance of the lights, Dinotte’s mounts are also very good. Many/most rear light mounts are crummy, with the result that the light often ends up pointing somewhere unhelpful. Dinotte mounts keep the light pointed where it should be.
As rear lights go, they’re expensive! But for me, it’s an investment in safety.