The clicky rotary dispenser is so far the most precise chalking method I've come across. It marks well without spilling chalk all over your fabric. Comes in a heart shape, with a useful eraser brush at the top. Refillable.
Option 2: Triangle (Musubi) Shape
Smooth dispensing tailors chalk. Easy to mark and easy to erase. Refillable by removing the cap.
Option 3: Slim
The pen like shape of this makes it easier to hold to mark around curves and angles. Dispenses smoothly, easily marks and erases just like option 2.
Very limited quantities available, these were brought back from my last trip to Japan.