Layher, Scafom or Plettac,
they are all the same thing, ring system with 8 hole node points spread at
500mm height levels.
leg loads vary + or - 5-10%
range of components are similar
all ring systems are a bit gappy.
depends on how much money you have to spend!
Haki, 4 hole node point, less components. still expensive.not as adaptable.