I have a rather expensive Pfaff embroidery machine.. We were told that the simple multi plug strip might not be enough to actually protect it, so we bought one that was guaranteed to protect it. It is meant for high dollar computer systems. Living in the Midwest it would be crazy to not protect that kind of an investment!
However, while we went to great lengths to surg protect it, nothing kept it from being completely filled with water after the tornado went through here.. After months to letting it dry out, and having it completely gone through and serviced the machine works perfectly so far... But we lost all guarantees and warrentees on it... So the surg protector only gives me peace of mind and didn't help one bit to protect it from what actually happened!! Crazy how life works.