The local stores are The Reef Gallery, Aqua World, Elmer's, Wet Pets, Odd Ball Pets. As far as used equipment Aqua World sells used stuff. Elmer's has a used sale once a month, the second Saturday of the month, but be an hour early for it. Buying a tank, I would buy new. Equipment I might buy some thing used, but 95% of it all has a useable life and you might be buying something at the end of it's usable life expectancy.
Personally I try to buy my stuff new and I buy it from a local brick and mortar store.
Ted's SCA is nice, I have read on the forums of other people having issues, but have also seen people who have been satisfied.