Let me add, for the benefit of newcomers and maybe a few of the others, that it isn't only how shiny the sword ends up looking that matters. A proper polish removes enough of the blade to leave it with the correct for it's age and school geometry, and not an ounce more. The color of the steel has to be right, the grain has to present itself properly, and all the activity in the hamon needs to be visible. If there is going to be a defect surfacing the polisher needs to know what to do about it. And dozens other of details need to be seen to.
Saying nothing about the polish or polisher in question (I don't know who Eric is), but speaking of polish in general, if you are going to have a sword polished make very certain that the polisher has proper training.
Grey