Topic How accurate is Mr robot or Shadowcraft
The first time I used MrRobot (www.askmrrobot.com -->Gear Optimizer), I found that I was pretty darn close to what I needed to be doing anyway. The tool does the math for me, and I use it. I haven't been disappointed with the results, and has made reforging/gemming easier whenever I get a new piece of gear.
It's lazy, sure, but has been good to me thus far.