digital or analog volume control?

I am presently running my dac direct to my amplifiers using the digital volume control of foobar (for ripped cds) and MPCHC (for movies).  When I play movies on MPC it indicates playback at 32 bit floating point, and from what I have read, Foobar does the same, and both sound great to me. I am having a dac modified (Monarchy audio M24) and my tech has given me the option of direct out (like I am using now - with no analog volume control) or either an alps or ldr type volume control - at added expense, the latter the most expensive.  Is the analog volume control better sounding than the digital that am presently using?