When I got my TracKick I some brake issues. When I checked prices on all the components I was shocked at how cheap it was to replace everything. So that's what I did. New calipers, rotors, and pads. I think the whole lot cost me about $125.
The beauty of it was how easily I gravity bled the new calipers. I just let it drip a few seconds and, voila! Done.
I highly recommend this route. Then you know everything is good (at least if YOU did it correctly!)