By the way, why would the command line be preferred over to a MAME application that offers a Graphical User Interface, which one can selection the game options from there? Maybe I'm missing something.
Like Haze mentioned, the official release is more stable and usually several days to several weeks ahead of the GUI releases which have to be
at least recompiled and some parts may need to be rewritten.
That said, I haven't noticed any instability problems with MAMEUIFX.

For now, I like it because it is so easy to search for a game mentioned on the forum, view the related history/screenshot/cab/marquee/CP on the right, copy the ROM (and parent) from the archive folder up to the roms folder, right-click on game title to audit, and launch.
If you're changing your game list often, a GUI version makes it a bit easier -- otherwise the official release is your best bet.
Scott