The biggest difference to me,and what I hate about the Ds the spokes on the Ds have a curve in them as they go outward from the center(never liked that little curve in the spokes) Thats why I went with the wheels pictured below(straight spokes with sharp tops. these are vintage T-70R from American racing. sorry just saw that you were asking about Vintage 45s(which have the curve like the Ds) I prefer the vintage 40s myself(straight spokes)
I got my V45's from vintage wheel works at a discounted price because they were blemished. IIRC, about 4 years ago they were 700 shipped. Puts them on par with the TTD price. The differences are what people have already stated the color on the spokes are different.