Spend some time on Google doing your research on Marineland Tanks before making the purchase. Several years ago I was planning on purchasing a 250 gallon tank and the Marineland Tanks had horrible ratings and many blowouts on their larger aquariums. I am not sure if they have improved or not, but if you are buying it new, you may want to check out better brands since you will be paying a few thousand anyway and it may not be that much more to get a tank from a more reliable company or even a custom built one.
If you do end up going with it, check the silicone seals and report any issues as soon as possible. Even the smallest imperfection on a tank that size could be disastrous.
On a side note: I do remember that the Marineland Tanks that advertised Starphire glass only had it on the front panel so moving from the front to the side view was a drastic difference and would have annoyed the heck out of me, but they may have changed or that may not be an issue for you.
