We have a heavenly new loop pile carpet, and we need to buy a new vacuum cleaner to look after it. I knew you had to use a cylinder rather than an upright, but the fitters left behind a leaflet which says that loop piles should be cleaned 'using the suction head only'. Does that mean just the little round hole at the end of the tube? I knew we had to avoid rotating bristles, but am I really supposed to vacuum the whole house that way? Argh!