Cold water method best and....
if you don't want to tie up your kitchen sink, put it in a bucket and place in the bath tub - it's much easier to drain that way and refill.
My best tip on brining is that I went and bought one of the large beverage coolers like they use on construction sites. It's perfect - mix the brine, add the turkey and some ice and sit outside on deck or in cold garage - PERFECT! The size is perfect for brining turkeys or other meats. When finished, I wash throughly, spray with Tilex and let sit about an hour then rinse, dry and store. I don't think I have ever used it for beverages but I just make sure it's cleaned good before storing. Even so - they are so cheap these days, doesn't hurt to have one just for brining.