Atkins since 9/25/10, (181, 173, 160), started with OWL

This is my 2nd time doing low carb. The last time was about 10 years
ago. Counting carbs is difficult by hand with a food journal, so I'm
wondering what online carb / macronutrient counters people are using.
I'm looking for one that's accurate, quick, and flexible.

-Tony