I've mostly cut out sodas, but they've been replaced by sugar-free drink mixes, highly-caffienated sugar-free drink mixes, coffee, and sometimes plain water.
I *know* water is better for me. I actually drank 5L of plain water yesterday. (BBQ + Heat Index of 108 = drinking lots of water) Of course, then I made the mistake of stepping on the scale... 5L of water = ~20 lbs, so I shouldn't be surprised that 5-ish lbs were still in my system. It was all gone this morning, but argh. I need to stay away from that scale.