I bought the largest capacity washer so that I could wash large loads, blankets, and comforters.  The first time I tried to wash a blanket, the washer was off balanced and didn't spin or drain the water.  I had to take my blanket and comforter to the laundromat to finish the load.  When I wash sheets, the loads keep getting off balance and I have to run a rinse and spin load after I untangle the sheets.  The model I brought doesn't have an impeller.  There is an option on my machine to prevent tangling.  But apparently it doesn't work either.