I prefer my machine to be flush with the table, all of my acrylic tables are stored away and my machines sit in their tables with an acrylic surround. It makes sewing for me easier and less tiring. When I first stared I bought a Sew EZ table just so I could sew in comfort, I did not mind that it was small, comfort was key for me. I think we all have our own preferences and certainly the extension tables are must of you do not have the ability to sit flush with the table.