What is your personal preference on gear setup?

Glock 21SF with a M3 light attached. Hiking/camping, range, eventual 3-gun, etc.

I've been looking at a thigh rig and also a chest rig.

Your pros v. cons for each setup? I'm tending to like the chest rig more at this point since I could also carry AR15 mags, suppresor, etc on the harness...

Thanks for your input on some of my dreaming.