my answer

I would choose the death-note and i can tell u why. i idolize different characters for different things, like kokichi oma for lying, karma and light for smarts and other things. so if i had the death-note, i'd become a party crasher and fake being a journalist and get celebraties who got away with horrid things (while drunk of cause) what they did and how they got away with it. so think people like... FAMOUS famous who are rich as hell. and i'll write their name in a book that isn't the note then when i get home i kill them by writing their name from the book into the death-note when they get home and are fast asleep in their bed. so let me paint you a scene of my plan. 

There is a party and I sneak in by chattin with the bouncer/security (something i can learn off of irina yellavitch from assassination classroom or poshtotty fromthe movie St trinians) and go in. There, on a stool by the bar sits a well known mafia boss (let's call him... mr. Po) and Mr. Po is known for his schemes and stuff. what do i do? i surve the area, seeing were the cameras are, guards positions, potentiall witnesses and more, then i go to him. I pretend to be the person he wants to meet. humour, personality, and more. i ask for his name for a report i'm doing, pretending to be a journalist for a news outlet i made and I write EVERYTHING down. His name, age, birthday and more all in a note pad. I ask him what time he'll be home at and he'll tell me and i'll wait later in the night to strike. i'll make sure he's drunk so when he dies, they see that he's been drinking and that's what they'll chalk the heart attack to (he looks like a steriotypical mafia boss for this example). his wife will See Mr. Po in bed, dead from a heart attack and she won't know that itwas no normal heart attack because i wrote "Mr. Po dies of a drunken heart attack in bed at 1:25 am" and use a substance that still can be ledgable by letter and still can have affect but needs needs another substance that can MAKES it readable thus, killing Mr, Po in 40 seconds...

THIS IS ALL HYPERTHETICAL DW I WON'T ACCTUALLY DO THIS!!!!!!!