So, another East coast transplant writing here.
Anyway, my big gripe when I initially got to Phoenix was the lack of organic produce. I was pretty surprised to see the lack of both at Whole Foods and Trader Joe's and the astronomical prices at WF as compared with the one in my hometown. I still haven't seen one organic orange in this town, but Sprouts pretty much satisfies my greens (kale, broccoli, lettuce) needs and has a little organic fruit/veggie section that puts the two "big boys" to shame.
Add to that it's about a block away, and I'm all-in. I still go to TJ's for some things, but Sprouts is acceptable in a pinch even for those and WAY better in price when it comes to staples (i.e. ANY meat), plus the commute is much less time-consuming.