So it is time to buy an oscillating spindle sander. I have looked at several and I have a couple of questions. First, for body work how many oscillations per minute should I be looking for? Grizzly has several models and says the slower one is better for fine finishes. It is, however, the lower horse power one. Should I worry about not having enough power to sand to the line? How much HP is enough? Any help would be great.