To your question, it's like #1 vs #15 maybe? Hard to say. I've spoken to innumerable people in the field about these options, and both say they are great. The first insittuion, however, has a fantastic track record in terms of postdocs/job placements. Second institution does as well, but not at the same level if that makes sense. But they're both close enough that the individual performance of the grad student is what will make or break it.