Calculators you regret not buying?

[HPCarnace]

I studied Industrial Engineering in the 90s in Barranquilla (Colombia). My first scientific calculator was a Casio fx82lb in freshman year, then I had a Casio Fx 5500L and finally an fx 5200p. In those days I could even program a Casio 880p. I never had an HP48G because I didn't have the money to buy it. After finishing university I was able to buy an HP49G, then a ti89 titanium, HP50G and this year I bought a Casio CG50, Hp Prime and TI Nspire CX CAS II. Definitely the calculator that I regret not having bought new is the HP48G, that's why two days ago I bought a used HP48G, it will arrive next week.