My experience with NLE video editing software has never been good. I bought one package (hardware to convert RCA jack inputs to digital and NLE software) about 2002 or so, and it worked a few times -- and would never work again, no matter how many times I uninstalled and reinstalled it.
For the last several years, I have been using Ulead VideoStudio 9 with the ADS Xpress DX2 box to do the composite to digital conversion. It has worked pretty well, but every once in a great while, VideoStudio would cease to do the capture, and I would have to reinstall it.
This time, I reinstalled it -- and it did no good, so I went to Corel (which bought Ulead) and saw that they had a brand new package, Corel VideoStudio Pro X5, which you could download and try for 30 days. The price was quite reasonable, but of course, a product that will not run is of no real value. I mean once or twice I managed to capture video, then it became cranky, and kept saying, "Cannot start capture graph" when I tried to capture video. There is nothing in the online help or user's guide explaining what this means, or how to fix it.
My guess is that there is something that gets scrambled in Ulead VideoStudio 9's registry that forces me to reinstall it every year or two -- but why it no longer lets me reinstall it and work has me mystified. I understand the logic behind Microsoft's registry scheme for recording data specific to different applications -- but to be blunt, it replaced multiple clumsy and scattered schemes in each application's data files with a single opaque method for storing the data. I'm not persuaded that it made Windows more reliable.