I've had one for four or five years, used for sanding curves in "cloud
router patterns and even some shaping of the legs for bonsai tables and
the like. Have a 12" disk sander for flat stuff but about a year ago
the Rigid oscillating belt sander/spindle sander. It's become the go to
for sanding flat edges and curves - though it is definitely LOUDER than
either the Delta drum or oscillating spindle sander - and it has a
table, something the BOSS lacks.
I bought mine used for the same price as the one you are looking at
and after using it for hundreds of times I felt like I stole it.
Occasionally I'd like to be able to tilt the table but those instances
are minimal and witht the table being round it makes it easier to
angle a large workpiece on the circuference to sand an angled edge.
Very nice dust extraction and quiet too. Most other brand sanding
tubes fit the drums. Some of the JEt tubes are much longer but you
get the option of flipping them over when worn.