dj confusion

I am undecided about Absoplute Entertainment & High Voltage, which one is better in your eyes? Also I was thinkning of having it at the meadow club, does anyone know if they have music that plays during the cocktail hour or do i REALLY need a dj? confused about that music during coctail hour think,
also since there are 2 weddings going on there I was wondering if you can hear the other wedding's music going on? the rooms seem pretty close together?