It's a ratio thing so you can never say +3 FoH is always > 1 facet, but generally you're going to need a REALLY large amount of +dmg% and -res% as well as a ridiculously low FoH base damage to ever make the facet worth more. So the GENERAL rule is go with +3 FoH over 1 facet.
This will also apply to your shield insofaras +4 FoH, +2 Conv, bit more res, blocking, stats, def > 2 facets. Two remember becuase you can facet the Hoz like you would the other shield.
If you want stlye points on a budget the a Cresent Moon Phase is a surprisingly decent V/T weapon. I mean it doesn't stand up to Grief in smite but it's decent for a budget.