Summary: I'm an accountant and got this for the office. I like the calculator, the functionality is good and the keys are laid out relatively well. The only issue I have is that you have to apply a little pressure when punching the keys. I often try to punch in 388,000 and actually enter 38,000. All 10-key calculators require some pressure, but perhaps the Casio DR-250HD needs a little more. The noise is not too bad, not nearly as loud as many other 10-keys out on the market.