Nik Color Efex Pro versus Topaz Adjust
For those who follow the photo's on my flickr account may notice that I do like HDR(like) post-processing on my images. I use Photomatix's Tonemapping functionality to create the basic HDR. After that I add (a lot of) drama to the picture by using Nik Color Efex Pro.
Nik Color Efex Pro has a plugin called Tonal Contrast. This plugin adds the detail/drama in the picture. Last weekend I ran into Topaz Adjust from Topaz Labs. This plugin is able to create the exact same drama in the picture. The difference is that Topaz costs only $49,99, while Color Efex Pro (with the Tonal Contrast filter option) costs $299,95 (but you also get a lot more filters for that price).
The following pictures are the result of either Nik Color Efex Pro Tonal Contrast filter or Topaz adjust. The differences are minimal if you ask me.
So if your looking for HDR-like drama in your photo's you might wanna consider Topaz Adjust. It's relatively cheap compared to Color Efex Pro, but you get 52 filters for that price (instead of one filter with several presets).