I would probably use both lights on whichever bike I was riding at the time.
I have heard that the DiNotte lights are nice. But, I love my Magicshine. I am not sure, but I think that the Magicshine is less expensive than the DiNotte lights.
I like the PlanetBike light comparison feature. I wish it was available with other lights as opposed to just the PlanetBike lights.
I liked the way that they did it in a tunnel. I didn't realize it was a tunnel until I clicked on the $400 light. It makes me wonder how my Magicshine would do.