G19,

Are you planning on using the integral ring mounts for mounting? If so, I would lean towards a fixed power scope for a smaller, lighter version on the forward-mounted design.

That being said, I have a 2x Leupold on a Redhawk, and a Bushnell Elite 2x6 on a FA in .44. I like the magnification of the Bushnell when I want to stretch it out, and it's a smaller overall package than my Leupold or Burris variables.