Hey Ivy,
There are some pretty neat looking cube tanks from China that they bring into Vancouver periodically. My 8gal is one of them, but the largest they have is a 25 gallon. All tempered with a one piece front and sides and a fluted base.
King Ed had them at one point but I got the last one from Eric and he seemed pretty happy to see it gone.. I kinda doubt they'll be getting them again.
The original importer was Jamed at Rainforest Pet Spectrum on Hastings in Burnaby - you can try calling and see if they got them in again. They had a bunch set up as displays at the front of the store last time I was there with a variety of different lighting solutions for them all.