holy crap, get the 181s I'll explain why and you can all stop your bickering.
Ok, first of all, twintips are mounted more towards the center, so there is less tip which makes it ski like a shorter ski. Also, the turned up tail eats up another good 5-10cm of running length for the ski. plus, you're a relatively big guy. for reference, tanner hall who is probably a whopping 130 lbs skis on stiff 180 or 185cm armadas. the added length will make the ski better at riding and landing switch, and makes tricks look more stylee. bottom line, get the 181s . the added benefit that they are 230 bucks leaves you with no other choice, just make sure that you don't get them mounted too far back.
Life sucks, get a fucking helmet
-Denis Leary