i like acrylic, for one thing nowhere's as heavy as glass, better optical viewing, , but scratches easy, but so does low iron glass, so when someone says it scratches yes it dose and yes you can buff it out, not that easy with glass when it gets scratches, plus regular glasss has that greenish color , but acrylic after a while years and years it can turn yellowish, also acrylic dosent break as easy as glass duh... I think acrylic is so much clearer than glass. glass is cheaper too for the most part..so it up too you, if you have to carry a tank up a bunch of flight of stairs, That would be my decideing factor.. good luck