New lens on the way

Yesterday I ordered a Tamron 17-50mm f/2.8 XR Di-II LD from B&H. I went to National Camera first to look at it, and I liked it. I also tried a Nikkor pro lens, and it is obvious that he build quality is higher, and it did focus faster, but the prices of those things are just not justifiable to me. When I get the Tamron, I will try to compare it with the 18-55 Nikkor kit lens I have. The price difference was over $100 from B&H with shipping (2 days) and National Camera with tax. Almost a quator of the price. I wanted to buy it local, but sheesh…