Changed most data timeframes from Fiscal Year to Trailing Twelve Months.
Added EBITDA option. EBITDA is more useful for heavily indebted companies. The basic idea is that interest payments act as a tax shield but when leverage gets too high financing costs(credit spread) will go up. Interest rate going up or tax rate going down will also lower the optimal leverage ratio for tax shield. Do note that it shares the same pitfalls with most non-cash metrics: high sustaining CapEx, accounts "un"receivable, etc. As such, it is best to be used to compare companies within the same industry or when you are sure a company is purely cash flow based, the prime example being tobacco companies.