Well, if it was zombies, Shadehawk's (from the webcomic Antihero for Hire.) gun, because it can't deteriorate or jam, but I would have it shoot compressed air bullets for infinite ammo

, oh, and silence it!( this way, it never breaks/jams, zombies wont hear me shoot it, and unlimited ammo)
Since u said no one else can have the my weapon of choice, could I choose to use limbs to fight like a karate person? And if so, would everybody else become limbless invalids? Making me the supreme leader of the world... since no one but me can manipulate anything?
If it was for plain ausomeness, hmmmmm.... off the top of my head I'd say dual large complex/sci-fi looking barrels that strap on to either wrist, have huge, notched blades mounted on top of them for close combat(by huge I mean when one walks with arms at his sides their tips would almost touch the ground.) and the main barrel of both guns are surrounded by smaller barrels which spin around like chainguns shooting an unlimited supply of...uhhh... spikes, which collapse after penetrating the target, releasing burning thermite(look it up) all over them :O, and the main barrels shoot... (O crp, nw I gotta make something to top the thermite spikes)... errrrrrr.. ill just make the cannons weirder

they shoot metal capsules that fall in two after a while in the air revealing little sentient balls of neon-pink jelly, that can combined and split at will. The pink-goolings also consume organic flesh to grow bigger, they are controlled psychically by the wrist-thermite-spike-minigun-pinkgoocreature-cannonblades' wielder(lets call the weapons wristcannons for now). While normally pink, the wristcannon's wielder can order the goo beings to change their color, to almost anything, including; chameleon, no color just clear, even a rainbow of colors all at once. They(the goolings) can morph into primordialy shaped creatures. ie: a head, a body ,and four legs or maybe, a head, a body, legs, and arms. They do this by thickening goo density for the limbs. The wristcannons use antigrav stuff so they have almost no weight, and they come attached to plated titanium arm gaurds ending at pauldrons( or maybe just one side has a pauldron, for style) and a large, if ripped, cape.
Yay! I made up a new weapon thing! i'll name the guns... Uhm.. well... lets take the "ther" from thermite(but pronounce it like the ther from "there"), the "C" from cannon, "Lade" from blade, add a A for smoothness, an S because theyvre dualies and therefore plural, and you get a workable enough tital: Theraclades!
But seriously, I've been making these things on the spot, so if anyone has any suggestions of improvement, I'd appreciate it!
