I find the regular hose removes more.... pressure washers are meant for tractors with 3 inches of mud caked on, eaves troves and cleaning concrete and decks.
I've noticed no matter how close you get to the paint you will not remove the grime... not matter what soap you use... it wont come off with a pressure washer. The touch-less washes use seriously harmful/harsh detergents. beware!
I use a regular hose and soak it real good... then use two buckets technique with debris catchers... I use two level cleaning technique... use one glove to clean the top part of the car then another to clean the bottom 1 foot that gets the most dirty... start from the top and work down... decrease the chances of scratching the car. I change the soap and water at least 4 times.
I then do the wheels with a sponge and normal car soap.
Then I use a shammy to dry the top portion of car then a microfiber to do the bottom last foot... 30 minutes tops.
I don't think he has kids my process involves 2 kids with little turtle shaped sponges going over parts of the car that are already dried.
Nothing wrong with a pressure washer if used with caution. The pressure washer is great for getting off any heavy dirt that a garden hose cant. All you need is one tiny stone or pebble in your mit dragging on your paint and its all over!! And I think the most crtitcal question in this thread should be what colour is your car??? If my car was silver I would have the local kids wash it with a hockey stick and a rag.... Taking care of a black car and keeping swirls down to a minimum is something a silver car owner doesnt have to worry about. Black is hard to keep up if I had to go back I would never buy a black car again. At night when the sun starts going down black is beautiful but in direct sunlight you could wax for hours!!!! Just my two cents..