stiff twins for all around

I currently own a pair of the orriginal Line Darksides (all grey ones) which have served me well but I'm thinking it is time for something new.

I want a ski which is similar in shape but stiffer that my darkside and that I can go a bit shorter, maybe 175 range, whithout loss of stability. The two things that complicate the issue is that I am a heavy skier (220lbs) and I am a die hard old style look turntable user (full 360deg rtation version) So I want a ski that has the twi tip, good stiffness and that would allow the mounting of any binding (no integraded binding crap)

Skis I am considering: Atomic Tweak, Rossi Scratch FS, Nordica Beast 72TT, Line Skogen, maybe a vokl V series. I liked the Head Mad trix when I skied them last year, but have concerns about their durability since I saw my freind break two sets last year and a few other break them on the hill.

If anyone has some experience with any of these skis that could offer up an oppinion or sugest another ski that would be a great help.