Not sure why everyone is saying the Deep Dimensions are discontinued. I ordered a 250DD on last month and received it fairly quick. I purchased the Tank, Monteray Stand, and Class covers.
It was between this and a custom 280 with 2" steel stand, both starphire. The Custom was $3600 plus tax and the Marineland was about $800-1000 cheaper. Then you still have taxes after that. A friend has a 300DD and I really liked it, he had it customized (Eurobraced, one overflow, closed look drilled, and 3 side starphire), The customization might have ended. I know he had a problem with the Eurobrace and the glass bowed out.
As far as the stand, one thing you gotta look at is they have "True Engineers" and they do lot testing to see if they can hold the weight. Vs billy bob and his brother using 2x4s and such. The turn off is that the stand is fairly short. I'm 6' tall, so I built stand to correct any imperfections on the tile and give it a 4" lift.
PS. when will I be able to add pictures without having to use a weblink?