At little or no expense I have acquired three HP-12Cs and one each of HP-17B and -17BII. I plan to give them to some mathematically bright 14-year-olds who show some inclination towards financial mathematics.
I was given a 14C some time ago, but have made limited use of its TMV features. I am not particularly interested in exploring the TMV features of the other two calculators.
Leaving RPN aside, how would you rank those three calculators against one another for the purpose described?
Edited: 24 Aug 2012, 2:29 a.m.