Here's the aggregate rating among all the major rankings, they are fairly similar:
https://poetsandquants.com/2013/12/02/po ... of-2013/3/Although keep in mind Yale recently made a big jump in USNews (11 I think?), and is colloquially considered top 15, and McCombs isn't.
They make around the same starting salary too:
https://poetsandquants.com/2014/03/13/wh ... schools/3/That said, Yale attracts students with higher GMAT/GPA's:
https://poetsandquants.com/2013/08/07/th ... verages/2/Summary: Historically McCombs and Yale have had around the same salaries, with Yale making a bit more than McCombs, especially 3-5 years out, but not significantly more. The average GMAT is 25 higher at Yale, and most people expect Yale to be on the upswing (You see plenty of people picking Yale over a school like Tuck, but you never see someone choose McCombs over Tuck).
With no money, I'd probably choose Yale, unless you want a career/location that McCombs recruits very well for.