First - is this already discussed somewhere else? I've seen bits and pieces in places, but of course can't remember which threads. Do I need a chest strap in order to have the alarm function? Are some monitors strictly chest straps, without the watch part? Is there any real advantage to having downloadable data? Anything in particular that a monitor needs to have or shouldn't have? I do like the idea of a built in pedometer. Any help will be greatly appreciated!