Ok I'm a fairly new runner. I typically run 50-70 minutes 5 days a week. I almost always run on pavement b/c it's convenient where I live. I've never been too concerned about my running shoes-right now I'm wearing some Asics running shoes that I got on sale but I recently heard about the benefits of running in flats. I've never ran in flats but after hearing all the hype I'm considering buying a pair. Would this be wise decision for someone who runs on hard surfaces???