This is a great machine for those folks who basically want mush.  You have to have Superman reflexes to slow this thing down, but it does a great job.  There is a dull and a sharp side to the blade, but won't matter....both sides will make mush out of an onion in no time flat.  But, for me, just so I don't have to chop the onion by hand is a blessing.  I guess once you get the hang of it, you can get it to just chop in larger pieces, but so far, it has been juice city for me.  But, this little devil has plenty of power and is great looking and super easy to clean.  I would give it an A minus. Worth the money!!