I think you may find this website useful. It contains dialect maps for this and other multi pronounciation words. Beyond "Soda, Pop, or Coke": Regional Dialect Variation in the Continental US
I have the ATH-M50's, great sound quality. Audio Technica is high quality. The only drawback is that they come with a 10 foot cord, which can get kind of annoying.
Rivals has Iowa State ranked 75th in its preseason 120 and includes a season preview: Rivals.com College Football - Preseason Top 120 Countdown: Nos. 75-71