Vac complete house yesterday. Lot of old dirt under furniture removed this time.  No problem.  Rollers assist to forward motion. Almost  like a self propelled mower.  Turn handle slightly to change forward direction.  Easy to pull backward for new pass. Was not expecting this feature. You can almost turn forward motion 90 degrees to get around furniture legs, etc.. This time took a little longer because I got into so many places I couldn't reach before. I AM LOVING IT.  BET YOU WILL TOO.
Free standing was not a problem at all. There is always something you can lean it against. No issue. Take the top motor off and hang on side hook on botton of wane to 
store in closet.  I won't have to get married now.