Yep - DT -- Delereim Tremens - Is awesome. Had it on tap in St Louis lately. Need to do a side by side against Duvel to see if it would sway me away from Duvel.
St Bernardus and Westmalle don't make Belgium Golden Strong ales, BTW. Don't think that's wut you were trying to say, but just for the record.
As far as homebrewing BGS's, the two most common and almost-automatic responses you will get from judges is: "not dry enough," and "not carbed enuf."
I have done 10 of em now, and can tell you it is almost impossible to carb/dry em out as much as Duvel. But keep in mind, when I package (keg---> bottle) I do so via a cobratap and tube (not via a beergun). I can't even Imagine trying to carbonate this style "naturally," (bottle/yeast carb).