I have a Rockwell scientific that I got in 1977 in jr. high school. I replaced it with a Texas Instruments TI-58 programmable in high school, which I replaced with the first graphing calculator (a Sharp) in 1987 when I started working in a laboratory. Then I got a TI-82 about 1995, and it's had some hard lab working since then. It's starting to get some stuck pixels, which sucks as it affects all the digits on a particular line.
So I'm thinking of getting a new one too... But I have all of the old ones still!
For up from the ashes, up from the ashes, grow the roses of success!