Best HP Financial Calculator

[Csaba Tizedes]

Beginning I do not really like the 12C, but since I wrote my SOLVE(I) for my 12C I don't want to use any other calc. BUT:

30B: the fastest calc I ever used and it have all important probability and inverse function and of course trigs - but how can I write a program for any statistical data collection without SIGMA+/- keys? Why no stopwatch (is it possible to install quartz and firmware just ONLY time functions and (stop)watch???). Why no 16kB RAM???

17BII: Excellent calculator, excellent SOLVE - why I feel something missing when I grab it into my hand???

10BII+: My first OMG: Brillant calc, why not programmable...? (OK: no more place on keypad...)

12CP: Err..., enough memory, faster than 12C..., why this color scheme and that LCD and keys... Grrr...!

So: the classic 12C is the best...