i think i'll try 30% brake. what are your other settings? here's mine:

################################################## #####
# Castle Link Data File
# Created: Tuesday, January 23, 2007
# Do Not Edit This File By Hand
################################################## #####
Brake Ramp: Immediate (*)
Cutoff Voltage: 40
Hex55: 85
Brake Strength: 50
Direction: Reverse
Spool-Up Speed: 8
Throttle Type: Airplane: Auto Calibrating (*)
Current Limiting: Disabled
Brake Delay: No Delay
Motor Start Power: 85.2698412698413
Throttle Response: 9
Motor Timing: Standard Advance (*)
Cutoff Type: Soft Cutoff
PWM Rate: 11khz (*)
Governor Gain: 50

btw, i copied and pasted that. i just learned castlelink saves plain text.[8D]

[edit: i definately like brake strength=30. i also wanted to add that i set the cutoff voltage to 4V so i don't piro in. my main motor esc is set to 9V, so it sputters down in a (barely) controllable way.