In my experience the best system I've used has been the Genisis. I haven't tried any Rubi or MLT systems. Vs the RLS the Genisis system for me is better because it doesn't move the work pieces laterally at all during the clamping process and also therefore can't mark the surface like RLS could on some stone. It is also more versatile in its range of depth. It costs approxamitely 50% more which is the only downside apart from the pliers wearing out too quickly.