The AF-S DX Nikkor 18-105mm was quite a shocker. Performance of the lens is not reflected by the price of the lens. This lens outperforms it´s price with ease. This lens is a perfect companion for the DX sized Nikon Dslr´s. It is unfortunate that the lens comes with a plastic mount, but unless you are going to change lenses thousands of times this should no be a problem. Seeing the lens has a plastic mount, sample variation might be higher then the metal mount lenses.
The Nikon AF-S Nikkor 50mm f/1.4G was a pleasant surprise, overall a solid performer. It outperforms the AF-D version on all aspects except on the IR performance. The IR performanc is pretty bad, and was actually worse then the AF-D 50mm f/1.4. In my tests with the samples I had, I found the AF-D version has an advantage of almost two f/ stops compared to the IR performance on the AF-S version. This is only on Infrared, if you don´t shot IR pictures this is nothing to worry about.