so, I've got an Amazon gift card burning a hole in my pocket, and I'm wondering what piece of brewing equipment I can add to the pile. I'm definitely leaning towards an immersion chiller. I've looked at a few on and off over the past few months, but I never found "the perfect one." I'd like to get one that will serve me fine with my 5 gallon kettle, but it would still be a good size if / when I move up to a bigger pot. I'd also like one with screw fittings, rather than just plastic tubing over the metal pipe. [edit: I'm also thinking about getting a grain mill] any thoughts? or is there something else that's indispensable to you?