I am getting ready to go to Washington DC, Virginia, and New York for a 10 day trip. I will be on and off a bus a lot and doing a lot of walking. I am trying to find the perfect bag to use. I don't want to buy something that I will not use again. I'm not a big fan of cross body styles, but I know that would be the most practical for this trip. I also was thinking of Coach or Burberry, but I've been leaning more towards LV lately. I don't want to spend more than $500 (give or take a little). Any ideas? So far I was thinking about the Pochette accessories with some type of strap, the Trotteur, or maybe there's others I am not finding? I don't need to hold a lot in it--cell phone/pda (Treo), digital (small) camera, small wallet, lipgoss, etc.