I love Trader Joe's. I'd shop there more often, but the place is ALWAYS crowded. I now go maybe once a month early in the morning or offtime in the afternoon to avoid the crowd as much as possible. I'd shop there more often if there was a store closer to my house.
And in my area, Whole Foods is awful, and not just pricewise. I stopped shopping there because I always saw rotting produce, disgusting meat. Last time I was there I walked by the meat counter and it just reeked. I couldn't bring myself to shop from them anymore after that.