I have owned several HP calculators: 15C, 28C, 28S, 48S, 48GX, and the 49G. I was dissapointed with the 49G (it was slow and had flimsy keys and a poor screen) so I purchased the 49G+ when it came out. Unfortunately, the keyboard on the 49G+ is soooo BAD it is nearly useless. Even though the keys "click" when pressed, at least 25% of the time the keypresses DON'T REGISTER. You have to look at the screen to verify EACH and EVERY keypress, otherwise you could make a mistake and not know it...I recommend WAITING until the keyboard problem is resolved, if HP will fix it. At this time (12/03) they haven't admitted the problem...