I know this isn't going to help you too much, but here it goes. I have read Runner's World and all of the fitness magazine's reports on the best shoes and ,because I am a pessimist, think that it is just better to try the shoes out myself. How do the people doing the reports know what type of arch, foot width, ect. you are...how can they tell you what would be best for you?
I have scoliosis and used to have to go to a professional shoe store to get my shoes, and they know a lot about feet and shoes, but are usually very, very expensive. Another way to find out may be to go to a foot doctor, which can also cost a pretty penny.
You are right about shoe salesmen not knowing much about the shoes. Unless they use them, they usually don't have a clue. Your best bet would be to try the above options or find an exerciser who has the same arch, shoe size, weighs about the same as you, knows if she is a heavy heel hitter or lands solidly on the center of their foot (sounds wierd, but my husband and I run/walk differently), etc. I can tell you what shoes I use if you think that would help. I am 27 yrs. old, 130-135 lbs., wear a size 6 1/2 shoe and am a heavy heel hitter with a high arch/narrow foot. Just let me know. : ) Good luck otherwise!!