Beard dermarollers recommendations?

[Betisfan]

As the title says Which beard dermarollers do you recommend?
I have a neck beard and I want to get beard on my cheeks also to look better.
Any recommendations about how to use the would be appreciated

 

[BrickTop]

Dermapen or Derminator. Dermapen > Dermaroller

 

[Betisfan]

Dermapen or Derminator. Dermapen > Dermaroller

Why? Does dermapen help beard growth??!!