I've got 5 pre made frames right now, but I prefer making my own. It adds a little more involvement, but also the towel racks are very light.
If you look around, most hex frames are going to be 300-800g. Mine is 170g. These sound like small weights, but a 2650mah 4S battery weighs 280g. So we're talking about 1/2 to 3x what a battery weighs in extra weight.