Now yer talkin' Big Dog. I had my DD pulled off the production line (or seduction line, if you're into AC/DC) before they put the overflows in the corner. That way I could control the look of it. Where it's located, I didn't want to see the corner overflows. One corner would have worked, but not the double dirty. I had an overflow made, much smaller profile and drilled the tank myself. But I digress, the point is, if you like the dimensions, you have that option, versus shelling out major coin for a custom. Honestly though, the cost of a new Marineland, might not be much less or even MORE than a Miracles with the same dimensions. It's worth checking anyway...
As for Starphire, MOST people being non-reefers, it isn't worth it IMO. If your reef is spectacular enough, people won't put their nose up against the glass and say, WOW it's such clear glass!!! There's also the argument (founded or unfounded, I don't know) that because of it's low iron, it scratches easier. Either way, it scared me enough to shy away.
3rd DO NOT call me when you have to move that into your house. My 200 was enough of a beast. I cannot fathom having to move a 300. So good luck with all that!
If you're going 300, an MP 60 might be what you'd want, or 2 anyway. And YES! they cost that much. But Vortech fanboys like myself will give it an endorsement everytime. I think we know where Chrisqueenz and Gary M. stand on the subject.