Good morning, I recently picked up a used Utilikilt Spartan camo in rip stop cotton and it is the lightest one I have and I really like it for everyday wear. I love how it falls in my lap when sitting unlike the 511 which is not a good sitting kilt. But the 511 is a great material in my mind, just with it had more pleats and front coverage. One thing I find is wind control is more difficult to deal with with the lighter kilts.