Gonna be ordering some Cusco coilovers soon. Going with the Zero2's or the Zero2R's. They're the same, except the R's have inverted dampers, but are almost $500 more. I understand inverted dampers are stronger, but are they that much better that they're worth that much more? I'm going to be running them mostly on the street and autox and as much track days as I can, if that makes a difference. Should I go for the 2R's or just the Zero 2's?