i voted unc, the north carolina schools are very successful historically, and it seems like the worlds with strong ACCs are numerous :)
really, it is very situational. i coached colorado, surprised it has the most votes, definitely not ideal IMO. the baseline matters, but also, for folks seeking to be ultra elite, the hit or miss nature of recruiting is tough. i guess it does depend on the MWC to some extent, if you have literally no competition for colorado and utah, it can be a sweet deal. some MWCs get pretty tough though.
probably the cushiest job i ever had was texas a&m, which is rightfully not on this list - it just so happened all other 3 texas schools were down, so OK and LSU would come into texas some, but mostly i had first pick over the entire state. i've seen other a&ms that would be horrible pickups. it really just depends on the circumstance. in some worlds, the acc is great and maryland/ga tech have a little more distance from some of the other beast acc schools, and can be pretty ideal. all depends.
i coach MSU also, on the list, and it is a pretty sweet job. we had to fight like crazy in recruiting to get where we are, and now there are literally a swarm of A prestige schools right on our border. i've been at OSU and felt MSU would be crap in that spot, because strong OSU, IN, IL really had them boxed in to michigan state itself. in my world, i forget which one but really its dacj's team, we've had the ability to reach into IN and OH for players, and that has been huge (actually right now half our team is from OH). but, if that stops, or if michigan gets too rowdy on us, it could really turn things around - could go from a premium job to just a decent one.
so anyway there is so much parity in what the great jobs are, i dont think folks should just seek out certain names, you should seek out situations, look for who has the breathing room, who is surrounded by solid but not great (b+ ish) BCS schools and stuff, and who has other a/a+s to duke it out with. fun to talk about but then i think some people go seek these jobs out (which are still usually at worst above average jobs), instead of trying to assess the actual situations.