Kit-Kat bars.
Burger King used to have the best shit; they used to give a packet of cards + candy, not sure if they do it anymore. I always found mixed bags to be gay (teachers used to do those and they sued to just rot in my bookbag)
Hit the local Costco/Walmart and buy a few big bags (and by a few I mean at least 5) of those bags of assorted Nestle/Mars chocolates or Wokna candies and give the kids a handful of the minis or 2/3 of the full size ones (depends on how splendid you want to be).
The assorted bags have a nice selection of 'brand name' candies like crunch, 100 grand, butterfinger, kitkat, 3 musketteers, milky way, nerds, smarties, jolly rancher's, tootsie rolls/pops, etc and you cant go wrong with variety. The kids will like it, the parents wont mind you spoiling them (except if they're the 'uber picky dont let the kids enjoy themselves' types).
2nding the Ring Pops.
I would go for something non-chocolate if you want to be remembered. King size snickers are great but not when you already have 32342324232 bars in your bag.
Generally a 3.5' piece of 2x4 in hand when you threaten them with a beating should work. Fuck appeasing them with cigarettes or threats to call the cops, just light up a smoke and get in their face - they should be gone in no time. (But you'll have to watch your place for the evening either way)
First suggestion:
Get candy that you enjoy. Seeing as how you just moved into the house, people could be wary of stopping by. If you buy 6 big bags of candy and nobody shows up, that is a lot of leftover candy that you get to enjoy all by yourself, so make it something good.
Second suggestion:
Assortment. M&Ms, Skittles, Starburst, Laffy Taffy, Snickers, etc.
Third suggestion:
Give out a couple. When I was younger the people that reached into their ginourmous bowl and pulled out one little candy and gave it out just pissed me off. Kids love the people that grab a few, or grab a handful and drop it in their bag.
Just remember, kids are greedy and they love sugar. Also, comment on their costumes, but don't be corny about it.
Dress up as a scarecrow and sit on the front porch, as still as you can. When the kids get to the door, jump out and scare the everlasting shit out of them. This happened to me when I was about 8 and it fucking ruled...we ended up standing at the sidewalk just to watch him do it to the kids who came after us...LOL
Also, hand out king size candy bars. The people who gave those out were always awesome.