Hooray for the High Desert! I am in Apple Valley.
Well crud, I am inclined to say Sears because there isn't an audio shop up here worth a ****. On the Go Audio used to be good, but they **** now. Crappy work, less than knowledgable employees and questionable business practices. At least with Sears you know what you're getting. Go to an audio shop and whatever they have in stock is what they will try to sell you on and they will charge you too much for it. Heck, you may just be better off going to WalMart.
Do a little research to know what is important for your application and go from there.