Brake Light Modulators and Turn Signal Cancel

Is anyone running a brake light modulator and/or turn signal cancelling controller? If so, what are you using? I've been looking at the ST2 ones, but there are others. I've used Back-Off before, but it's only activated by depressing the brake lever/pedal. Badlands and ST2 activate also by downshifting and/or letting off the throttle. So if you are using something, please share details both good and bad...