I usually only shop at Best Buy when I want to see a product "in person" before I buy it. (I can usually find the item(s) cheaper somewhere else). Of all the times that I've been to the location on 21st South, I have had a really hard time trying to get help. When I say help, I mean help/assistance from a KNOWLEDGEABLE employee, not one that is just making up things as he/she goes along. I do like the fact that their employees aren't on commission, but sometimes it isn't such a great thing because it interferes with how much quality help you do get.
Best Buy http://www.bestbuy.com/ here
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