One of my main issues with Topaz Detail was that it felt a bit slow and clunky. The current release fixes that and makes the plug-in much more responsive. The processing seems similar and it’s still a great plug-in (and at an amazing price!). The above image was processed in Photomatix Pro and then I added in some parts of the original exposure (to fix the movement of the bus between exposures) and an overall processing with Topaz Detail. By using it to blend in the original main exposure, it can subtly clean up some of the washed out parts of the image caused by the initial blending and processing.
Check it out at: http://www.topazlabs.com/detail/