Instruct: Classify Amazon reviews into positive or negative sentiment
Query: MAC USERS BEWARE!

WARNING: This is NOT a postcript printer -- which means if you use any graphics based program (Quark, InDesign, Illustrator, etc) you wil have to buy separate, VERY EXPENSIVE postscript software. After an eternal quest to find a good quality printer that is postscript compatible, I finally purchased the HP B9180. The print quality and colors are amazing, but this printer sucks up ink like a sponge. HP... please make another printer with built-in postcript for us designers!!!