For those who are inquiring about the differences between Nik and PS/LR...
LR and PS are stand alone photo editors while Nik offers plugins. the plugins from Nik work in conjunction with your PS/LR workflow. i typically do my standard edits in LR and then drag certain select photos into PS where i access my Nik filters to do additional retouching. you can access the Nik filters in LR as well.
Nik is not a stand alone product...it works withing PS/LR/Aperture. Nik does offer (throughout their full suite) an infinite number of creative possibilities within a fairly easy to use and intuitive UI.
i can't recommend it enough especially at its current price point.
5D3, 5D2, 5DC, s15mm Fish, 24mm TSE, 35mm F1.4L, 50mm F1.2L, 85mm F1.8, 100mm F2.8L, 24-70mm F2.8L, 70-200mm F2.8L, 580EX, 580EX2, 600EXRT