Hi Brad & welcome to the asylum!
The D3's are expensive, noisy on concrete roads and expensive....did I say that already?
Oh, and G/Yr only makes so many at a clip and when they're gone it's a long time before another run. Okay those are the cons. You want the pros? The tread pattern is almost a direct copy of the semi-wet tire G/Yr issued to CART and F1 when they were doing those series back in the early 90's (?). The carcass construction is also very similar. Oh, one more con: they lack a bit of crispness on initial turn in, but you get used to that after a short time. To counter all the cons the wet grip is to not be believed, and the dry grip gets better after you can smell them inside the car. They take a good bit of heat to start to work, and at 40* and or when cold at normal ambient temps you need to know you have very little grip. At the other end though is where they make up for the cold= no grip in that as you smell them they don't get "greasey" feeling till you put a lot more heat into them and on the street you may never get to that point.
The nittos seem to be a good bet, NT555. I'm a D3 fan ( nawh, you don't say! ) but I think I will try the NT01's as I want to try a dry app tire. The Michelin PS2's would be my 2nd choice after the D3's as an all round tire as they have great wet grip I'm told. They're just as much as the G/Yr's so I'm not inclined to buy them as I know what the D3's do at that price point and all my feed back on the PS2's are from 5 & 6 drivers. They seem to work real well in the wet on a Z as I've seen them in action, but have never driven on them. Oh, and the sumitomos(sp?) are not really up to it according to the people that had those.
JMHO
Tom