Longer Public Enemy?

Looking for a ski to compliment my trusty 05 Public Enemy. Last season I took the PE everyhwere. It really became my do-it-all ski. Rather than carry a couple of skis w/ me or choose what to ski, I would just bring the PE. Skied it at MRG to Big Sky last year. My only issue was that I wished it had no twin tip or was larger than a 179 cm. The twin tip is nice, but you loose ~9-10 cm of ski. This was bad when the speeds got mach looney. Was considering the Seth in a 189 cm...any thoughts

thanks