I've always felt the multi rod style stabilisers were too prone to flexing for my liking, so making it lighter may increase this, although they seem to have spaced the rods further apart to compensate. I guess it will depend on what sort of weighting system they provide as to how much control you have over the mass weight, they just look like little spacers on the website.
So far, no evidence of flexing. The extra carbon rod may help with this (4 as opposed to the Beiters 3) They are simply plastic spacers but I believe weights can be fixed into them if required. They do may a heavy version as well.
I'm a bit wary of over-light long rods. To stop the rod kicking-up on release you end up adding weigh to the far end. This creates a pendulum effect and means it takes longer for the bow to settle into a steady aim. What you really want is evenly distibuted weight, over sufficient length to properly stabilize the bow. If you can get this with a thin rod (to reduce air resistance), so much the better.
At the moment I'm using the rod with no end weight - as such what weight there is is evenly distributed and I haven't noticed the rod kicking up. Was initially looking to simply reduce the weight in hand but have found the rod has quietened the bow consideraby in comparison to the Arten carbon I was using previously
Need to get on the line more and shoot the ruddy thing but initial impressions are quite good.