I have been in the business of teaching woodworking for over 20 years at all different levels.  I have experienced many different types of scroll saws in school settings and home shop settings.  For the money, this is one of the easiest to set up and use I have ever seen.  They give almost no trouble at all and are rather vibration free if the right type of blade is used with the right type of wood.  Experience is the best teacher in this regard.  It is the smoothest running saw I have ever worked with and works well with young wood workers.  There may be equals on the market, but I have seen nothing better for the money.  I would definitely buy one again.