Replying to Eastern Ice ski? kastle?

So I've been wondering about getting a set of real razor blades to carve on when it gets super icy. I ski sugarloaf ~50 times per year and already have a set of soul 7's for the pow and twin tips for the park. Because it's the loaf, well see a ton of crappy/ icy conditions, and I want something that will let me go stupid fast and have fun on icy days. More of a tool of necessity than anything else. I have some race experience, but I don't want to buy gs skis. I want something kind of in between gs and slalom. Anyone rip the kastle rx12 or mx78? How bout the volkl v-werks ski? Head worldcup rebels i.speed? Any other ideas for a top level nearly race ski that doesnt have a 30 m radius? It's hard to find reviews of those high end skis.