I want to buy a Blackhawk! thigh rig, but I'm having trouble deciding whether I want the modular rig so have the option of using it for other guns in the future, or just a fixed one for my Glocks. The deciding factor for me is whether the modular setup is as stable as the regular one. I've read through some reviews and can't seem to find an answer. Has anyone tried both? If so, does the modular rig feel pretty snug or does it wiggle around? Thanks in advance for any helpful replies.