Hello guys. Hoping for an advice from expierenced lightsaber builders on a PC tube for a blade. There are basically 2 types I can buy, regular one with flat surface inside(thats what i've been using so far) and there is another type with corrugated surface inside...claimed to better diffuse light. Keen to try it but wondering if anyone already used second type and knows for sure if it's better or worse in terms of a lightsaber blade.