I had one of their glass 240 gallons at one point. I was unimpressed and sold it.
The joints were sloppy, the overflows were siliconed on crooked, and it was just overall blah... It was not a show tank.
I wouldn't personally buy from them again. Craftsmanship is just sub par.
Plus, I don't like having tanks that big relying on glass/silicone joints. If I'm buying a new tank that big and dropping that much money, it's going to be acrylic.
And if I'm getting an acrylic tank, it's going to be from someone that uses thicker acrylic and makes higher quality tanks than glass cages does. I'd be looking at midwest custom aquariums or another company like them.