Fastrack since 2005 when I started my layout. Mounted on 1/2" foam to help reduce the noise ( adding scenery has reduced it even further)
I made sure the pins all make good contact as it went together, and soldered 14ga feeders every 10' directly to the tabs underneath. I sighted down the railhead to check for any dips or rises ( especially on turnouts) and snugged down, or shimmed accordingly with index cards. Its" gently" secured with #4 screws.
I've never had a voltage drop issue.