With an acrylic tank, there is no refraction (how light bends from air to water). Every public aquarium uses acrylic and some of the panels are up to 16 inches thick without any distortion. You will also appreciate the bent front corners on some acrylic tanks, no ugly silicone seams. Lower price, much lower on the larger sizes. Longer lasting (Older 25+ years Tenecor tanks are common. Not too many examples of older glass tanks). Safer and stronger. Better looking. Acrylic wins.So acrylic is more better as far as clarity