Really? Cause studies show that runners with more expensive shoes are 123% more likely to be injured. (Source)
Don't rely on your shoes to prevent knee and foot injuries, because they won't. Work on form.
freshman year of cross country i ran in some dr. shoels shoes (idk why, id always ran in asics before and never had a reason to switch brands) and got shin splints like crazy. changed back to my asics and bam, went away. every time ive run in a different shoe, spike, whatever, my legs have hated it. asics does the deal for me. ill get a pair and run em till the souls peel off. wore em threw basic, ait, and majority of all my track and cross country seasons. ill never run in any different shoe. they got me sold on their product. my opinion from experience, you get what you pay for in the line of shoes and boots.