The CFA institute only authorize two different calculator models: The Texas Instruments BA II Plus and the Hewlett Packard 12C (There are some different versions of the Hewlett Packard calculator but it is essentially the same model). When I sat the tests the vast majority would use the Texas Instrument calculator. The HP calculator seems a bit “old school” for lack of a better description. Unless you are already familiar with the HP calculator (which doesn’t seem to be the case) I would stick with Texas Instruments. You can’t go wrong with that one!
Well, what is the best calculator… who could say? It’s all relative to what you feel comfortable with, but I’m going in armed with a Texas Instruments BA II Plus. I’m pretty happy with this unit and it seems to do pretty much all I ask of it without too much fuss.