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by abyssknight 5412 days ago
I still have my TI-83+ from my highschool days. Honestly, I couldn't survive without it. When I have to do hard core matrix algebra or graphing, and I need to be in front of my book, I can't use the PC or tablet -- it just doesn't fit in the zone. The physical nature of the calculator, the portability, and tactile feedback are all necessary.

Also, the TI-83+ takes a beating. ;)