I've been a woodworker for over 35 years & this is my go-to finishing sander.  Over the years, I have tried a multitude of different sanders from various manufacturers, including the high end ones like festool, & none of them even come close to this sander, IMHO.  Not only does the sander remove wood relatively quickly, but it also provides an excellent finish to my work.  The design makes it extremely comfortable to use & control.  I've often sanded with this for several hours a day & have not had any issues.  The product is also very well made.  It will last a long, long time, even with heavy usage.  However, the pad & perhaps brushes will periodically need to be replaced.  I highly recommend the sander.