Which calculator should I use for the exam? his, calculator, previous, battery

king_kong

Should I use "Gunner" my old TA-II Plus buddy who has been with me since college and has been by my side in all my previous CFA battles. Or "Julia" my TA-II Plus Professional calculator who has been my calculator of choice in my LIII preparations.

Gunner is still capable but his battery is slightly dim though not to the point of being replaced. His body shows the scars of bouncing around in my bag on many a trip to the library.

Julia, once my backup calculator, is now my go-to gal. Her sleek silver chrome is irresistible especially compared to Gunner's black scratched-up body.

So who should I put on the front lines and who should I keep in reserve come June 4th?!?!