HANDS DOWN:

STUB HUB

1. They guarantee your ticket so you don't have to guess if you bought a fake like ebay or craigslist
2. you dont have to worry about getting robbed (craigslist)
3. Best part of all, I've found they have the CHEAPEST prices, keep checking daily b/c some old man with lots of money will put some up for cheap just to get rid of them quickly so the tickets for the best price won't be up for sale for long

I've found nowhere that even comes CLOSE to stubhub