This is my 3rd bathroom remodel using a VIGO door.  This one was an Elan Adjustable Frameless Sliding Shower Door.  They take a little patience installing and do obey the instructions when it says it takes two people to install.  These are heavy, solid, well built doors with extremely smooth travel.  I always add a tiny little piece of clear tape on the top of the rail in just the right place to insure the roller holds the door tight against the wall.