I never got to ride the Subjekt... but I bet the pop in your board has definetly worn out. If you look at Shane's new shape, honestly I think it looks similar to the old Subjekt shape. The 2011 Shane is pretty loose and It has a 3-stage rocker. I would say definetly give it a go and try one out. Also, its got carbon fiber in it, so the pop should last a long time, just incase you want to ride this board for almost 10 years like you did with the Subjekt!
What size were you riding in the Subjekt? You are about my size and I ride anything from 137-140