Okay -- I'm not a pro, but not an amateur either....  I've done cabinets without this tool and I just did one with this tool.  There is no comparison!  This tool makes hanging cabinets a BREEZE!  You can get the cabinet faces lined up very nicely, drill and counter-sink your screws, pull the cabinet claws and you're done.  This tool makes this job SOOOOOOO easy!  As some reviews have said -- you're a bit "blind" when you drill the holes because you can't really see into the drill holes/guides.  However, as long as your drill is straight and you take the time to mark your drill bit you won't have to worry about the big coming out of the face of the cabinet or thru the other side.