I have several machines on Delta mobile bases.  After discovering how well they are made and how well they work when I got my first one with my Unisaw, I don't even think twice now when I buy a new machine, I always get  the Delta base to go with it.  I just got a DJ20.  This is one big, heavy  jointer.  It's about 475 lbs, about the same as a Unisaw, but this jointer  is very long and possibly awkward to move.  But my DJ20 is really easy to  move and manouver around my small shop using this base.  One Hint: when  you set up your jointer, place the cabinet in the mobile base first, before  you but the jointer assembly on th cabinet.