it really depends on what you want. Is it going in a wall? peninsula? is an external overflow mandatory?
do you need starfire glass? Do you need a odd height?
as stated in this thread. there is nothing wrong with a aqueon, marineland, deep blue tank. But there are outside factors that come into play that only you can answer. Start to answer yes to any or all of the above questions, a custom tank is in order
I just had a planet Aquariums 310 delivered. I have to say the overall build quality is excellent. Plus just based on how the crated the tank for shipping you can tell they take pride in their products. Hit up Dave from reef trends. He got me a great deal.