Summary: The Display on this (TI 89) Is the worst I have ever seen. For me it is extremely difficult to see the display. I also have a TI 84 and a TI 36 so I am not picking on TI, I love all three but I often use the other calculators when I want to use the 89 because of the display.
Summary: The day I received this, I put the batteries into the calculator and turned it on only to see a bunch of garbled characters. Tried turning it off and on and removing/replacing batteries to no avail. I sent it back for a refund.
Summary: My son needed a calculator for college and this one has proven to be the right choice. It does everything and more. It was work the money. He will be able to use this all 4 years in college and maybe more.
Summary: The manager and cashier were super friendly and helpful in ordering my calculator. My calculator is wonderful and i can do so much more with it than any other I've ever had, and now I'm passing my pre-calculus class. Thanks Staples!