Usually, regardless of which application you use, PDF to any other format conversion is always lossy. By lossy I mean, it will loose format settings, drop words (because of fonts mismatches) among other things.
PDF2WORD is a good choice but be sure to proof read all your conversions. Most of the apps come close but nothing is 100%.
Stone walls do not a prison make,
Nor iron bars a cage;
Minds innocent and quiet take
That for an hermitage;
If I have freedom in my love,
And in my soul am free,
Angels alone that soar above
Enjoy such liberty. - Richard Lovelace