Which kind of the Blu-ray copy software should I use?

If you only want to copy a section of a Blu-ray movie, the trial version is enough.

If you want to compress a Blu-ray movie to one DVD-5 or DVD-9, or two DVD-5s, as well as one DVD-R/RW or DVD-R/RWs with AVCHD format, you'll need to buy the registered version.