I frequent Reef Central very often and the reviews of Glass Cages are very mixed. I personally would look elsewhere.
If you are considering acrylic, I would look at http://www.envisionacrylics.com/
. They are very highly respected and all the work I've ever seen from them is first rate. The pics on their website hardly do them justice, they are really pretty. A large tank would be much lighter too. It will cost more than Glass Cages though. For a glass tank http://www.miraclesaquariums.com/
is also highly regarded.
What size tank are you looking for? Perfecto, Marineland make up to 300G as a standard size.