I bought a tank used that was supposedly made by Bow Valley. No problems as far as I'm concerned. Granted I am not that particular, it was my first tank of its kind. No leaks, two returns one in each top corner, and a working external herbie overflow. There was a soap dish attached to the side but I was easily able to pull it off.....
I have seen one or two custom tanks at red coral and at least at a distance they looked really good.