i love mine there awesome and im getting better nm's as well and more of them because its more of a comfortable ride, however they are expensive but whats cheap anyway these days... i wouldnt say it will change your sailing experience forever

because for speed sailing its not going to make you quicker on the flat stuff anyway its when you get in the rougher stuff that it makes a difference so for slalom and B&J and for those crazy old blokes that smoke everyone

but i've only used it with my 7.0 and 7.6 cambered sails in light and fully powered conditions and ive noticed that they make light wind sailing easier because the rig doesn't deform as much when going over the chop but, love em or hate em, or dont worry bout