where to get big pots?

[smooth move]

didn't want to hijack the big pot/beans thread.
where is a good place to get a big dutch oven or cast iron/enamel big pot, like maybe 20 qt. or bigger?
seems like when i start a gumbo or similar dish, i always end up out growing the 12 qt. pot. i've got a ss larger pot, but the bottom is sorta rounded and not good for roux's or evenly distributing low heat and it wobbles. surfed the net and got about a million pots that i never heard of and some of the pricing was way over my budget.