Fixed Income interview / coverage ratios

What coverage ratios would you consider most important and why? I went with EBITDA/EBIT coverage and DSCR. Would you do both EBITDA & EBIT, or one over the other? Any other pointers? These are great posts on the topic too if someone stumbles across this with a search: http://www.analystforum.com/phorums/read.php?1,1131081,1132240#msg-1132240 http://www.analystforum.com/phorums/read.php?1,1122941,1123371#msg-1123371