For all the RC Planes I print, I only use LW-PLA for the main model, and regular PLA for high strength (wheels, motor mount, etc). With active foaming, it weighs about 47% less that standard PLA, and pre-foamed is about 20% less in my experience. I use both since one brand has more color options, but it's all pre-foamed, while my preference of active foaming seems to only come is less color options (that I have found - but I'll be honest, I don't even look at 3D Labs due to price).
For all the RC Planes I print, I only use LW-PLA for the main model, and regular PLA for high strength (wheels, motor mount, etc). With active foaming, it weighs about 47% less that standard PLA, and pre-foamed is about 20% less in my experience. I use both since one brand has more color options, but it's all pre-foamed, while my preference of active foaming seems to only come is less color options (that I have found - but I'll be honest, I don't even look at 3D Labs due to price).