+1 for the Professional
Citing from the TI website, about the TI BA II Plus Professional:
The BA II PLUS PROFESSIONAL features even more time-saving calculations to make short work of complex equations. It’s ideal for finance, accounting, economics, investment, statistics, and other business classes, as well as on the Chartered Financial Analyst (CFA®) exam.
In addition to standard capabilities such as time-value-of-money, accrued interest, amortization, cost-sell-margin, and depreciation, the BA II PLUS PROFESSIONAL also includes:
Key features:
• Net Future Value (NFV)
• Modified Internal Rate of Return (MIRR)
• Modified Duration
• Payback
• Discount Payback