[Mark McCall]

I like the rocket blower too......there's just one issue it.
Static cling holds particles to the sensor filter. The blower can't always blow hard enough to break the clinging effect created by power to the sensor.

Also, the RB blows dust off the sensor, into the body of the camera, where it will be sucked back onto the sensor when it's powered up again.

By removing dust with a swap and cleaning solution, your removing it from the camera completely.