I might agree with asoisee but I would have to qualify it as
1. A BCS school or equivalent (Notre Dame or BYU, possibly others)
2. Not having unreasonable recruiting restrictions (indications are Duke had these before this year)
And I would prefer a less successful program except for GT (of course), Texas, LSU, Bama, FSU, UF, Miami, and possibly UGA. There are advantages to both but a school like Nebraska that IMHO is at a recruiting disadvantage to Texas but has a very successful history would be a tough gig.
Other tough gigs, being the next coach at Oregon, Oregon State, Washington State, Wisconsin, South Carolina and Kansas State.