The Hiketia is a pretty good place to start if you just want to get a feel for the character. George Perez's work is great, but a little dated. I can see it not being a body's cup of tea, but it's still worth a look. Greg Rucka's run is pretty awesome, though unfortunately cut short by Infinite Crisis.

As for Gail Simone's run, jury's still out on whether Simone Awesomesauce will outweigh annoying forced shipping. Still, it's already a damned sight better than either Heinberg or Picoult could come up with.