Press Brake Controller and Fiber Laser Source

Good afternoon,

We are currently deciding which controller to include in a 5 axis press brake. The question is between the Delem 69T controller and the Esa 675w.
Another question we have is to choose the generator brand for a 4KW Laser. Between an IPG 4KW and an nLight Corona 4KW.

Someone with experience who can help me?

Thanks