Sorry if this is a dup. I searched the forum multiple times, but it didn't show up.
Thanks to you guys, I ended up collecting calculators :) Of course, I budget about $10~$20 for my toys. The latest purchase was ti-68 and hp 300s+, which I received today.
The HP 300S+ seems to be the same calculator as Casio FX-115ES, with some features not present (maybe another version of the fx-115es family?). The keyboard layout is similar with slight differences.
On the other hand, ti-68 is an interesting calculator, the keyboard is overloaded with functions. Hard to focus at first glance :)
enjoy your day.