Being the North Dakota plowboy that I am, I too say eye-rix and eye-ris.
Though the most notable pronunciation I've ever heard came from a Scottish professor...
Imagine if you will a fellow that looked like a cross between Groundskeeper Willie and Mr. Burns with a strong but slow Scottish accent mixed with a wheeze.
"So you use AhhhwwwwReeeekksssss?"
He scared the living daylights outta me. It was pure evil... I could picture a 20D11 granite monitor with flames shooting up from behind, two red eyes atop a black background on the display, and his voice saying "awwwreeeksss"...
Needless to say, I avoided that scary dude.
Random I know, but I love it