Very nice threaf

Nope.

I agree with the above.... also, Decimate, Apprehend,aa, Crippling Strike,aa, Decimate is usually how I go.

Back on Topic: Your masteries are outdated...i've run plenty of practice games and the tradeoff of offensive power for going with the defensive tree just isnt worth it. Chances are, with Darius, when you go in to a fight, your going to either take everyone down or you're not making it out alive lol. Ability leveling is also off... pick a secondary ability( Apprehend or Crippling Strike) and level it by 13... Leveling them evenly makes them both mediocre the whole mid game... if u want more damage and ur able to stay with ur enemy (ie Frozen Mallet), then go with Apprehend and lower the cooldwon on it while cleaving away armor... If you don't go with Frozen Mallet and have trouble staying with the enemy, go with Crippling Strike. Be definitive! Ohterwise your build will just be "eh."

Explain your masteries and runes. Put in an introduction and skill usage lower. Put Pros/Cons. Put Early/Mid/Late game. Put Summoner Spells section. Put Ganking section for your jungle guide. Put in optional items. Put in late matchups and a possible jungle route. Put in jungle information and seriously, some damn BBCoding. I have some skill combos for you.

Decimate+ Apprehend+ Crippling Strike (pre-6). Great harass and you can win the trade as well since their attack speed is debuffed from Crippling Strike.

A kill combo is, Decimate+ Crippling Strike +AA then after they try to run Apprehend and Noxian Gullotine.

Overall, this isn't that good of a guide. It lacks a lot and needs improvement but, I won't downvote it. After you make it into something proper like one of the good guides here on MOBAfire, you have my upvote.

Also, Turn on comment to vote to avoid trollvoters for a bit.

Sincerely,

JungleKing

One thing, in both builds you really only have 5 items, add something like a Shurelya's Battlesong instead of one of the boots.