This is an old thread but I came by it today and noticed the discussion around cash and borrowing. And I'd like to make 2 points.
1. The loan is less than my personal safety net account. But I wouldn't pay from there, it's sacred. It makes me a free man.
2. Over 5 years I pay the bank ~11% total while my worst expected investment performance over that period is in the range of ~25%
Finances aren't black and white. Do your math and do what you are confident of.