Empty Clips or Piercing Rounds
Well, Repulsion Field and Personal Force Field have completely different uses and effects. PFF is there mostly so that you can have a chance to recover safely in the middle of a fight, especially if you're solo. Repulsion Field is there to actively affect the enemies to make them easier to attack.
RF does offer a nice survivability boost against things like warwolves and rikti that are swinging that freaking sword.
My personal experience with PFF is if I need it in combat to get a breather, it's usually too late. I tend to still get 2 or 3 heavy hitting attacks on me as it's activating, and die anyway. It is handy if I get booted from a team and am in a field of purple con enemies though.
"The danger is not that a particular class is unfit to govern. Every class is unfit to govern." Lord Acton
Madam Enigma's History
Personally, I'd take repulsion field (the melee range force bubble type power) over PFF. It offers a survivability boost against melee mobs, and lets you attack back.
"The danger is not that a particular class is unfit to govern. Every class is unfit to govern." Lord Acton
Madam Enigma's History