Easy CD Creator installs a lot of trash in the system, so I wouldn't recommend it.
Nero6 is also very big and has many bugs, but it doesn't usually cause problems with the rest of the system.
If you burn MP3 files, the best support for long files names is found on Prassi/Veritas based programs, like RecordNow, but the interface is not very comfortable.
Nero6 only supports up to 110 chars (more or less) and Nero 5.5 only up to 64.
BurnAtOnce also has a lot of options for long file names, and it's light fast AND FREE, but I don't know how to save the compilations (in order to reuse them) and it's still beta... (I think).
You can install BurnAtOnce without fear.