Is NARBC around your area at all. Chris and I were very tempted in buying a few cages from there. I think it was custom cages, I'm not quite sure the maker, but they had them there for 1/2 off! These were outstanding cages, made of pvc, with front doors, helix control, and just some really freakin cool scenes.

If you cant spend that much, I think it might be more conveinant to make your own cage if you have the supplies and tools. I just dont see a huge glass aquarium being very easy to maintain. For us, it was either a nice custom cage, or building our own. I lean more towards building your own, because you have complete control how how big and fancy you want it to be. You can buy acrylic for the front side doors, and use wood or ... melamine I believe for the sides. I think there are plans on the bearded forums that I saw, some very cool setups. Hope that helps ya.