Subscribing to this one. I just bought 18x10'' saleens for my back's and 18x9''s up fornt so I can't wait to hear some comments. You can try e-bay for some used ones. Some need to be plugged but I guess if your that desperate then go for it. I'm not about to do 100+mph on something someone plugged. Very few people know how to plug tires correctly.
Tirerack charges shipping while DTD usually doesn't not charge shipping, however their tires are priced higher. When i bought kumhos, they were a few dollars cheaper at tirerack even though i paid shipping.
Both are good companies to order from, and basically cannot be beat locally. if you want nittos, go to DTD as tirerack doesn't carry them. Also, if you want somethign that Sears may carry, print out the price from tirerack and take it to them, they should match the price.