I have an acrylic 300 and I can say that the tank is so clear to look at.My tank is only 4 months old,I do have 2 very insignificant scratches(if you can call them that) they are very light I just didn't bother to remove them until I get a scratch that needs removing.I hope that doesn't happen.I have had many a rock slide in my old 150 glass tank.I never scratched my glass tank(had it 3 years) I am more paranoid when it comes to acrylic.I have to say the clarity is much better.If I was to get a glass tank it would have to be made from low iron..Glass is so much heavier.It took me and a friend to lift my tank.Here is a pic.I am still in the build process
