Lots of good advice on here.
I think 100K is a
time changer. If you have no other means of financial support, life will
probably move slowly for you. It will take you time to buy a house for example or buy the car you want. But let's say all of this is not important, then what is? Career, long life connections, enjoying the student life one more time are all important. I am not the type of guy that falls for rankings. However, I do appreciate quality. I think both schools do bring in the quality of knowledge that you might be seeking.
If I knew where I wanted to head with my career and both schools offered equivalent opportunities, I would choose the school with the highest ROI. A house and a quality life style with my family is more important to me than to live for the next couple years with debt and to say I'm a HBS grad.
And just one more thing before I leave you alone, don't fall for statements like "100k is just a drop in the bucket" or "it is only 1% of what you will be potentially earning", it's all based on assumptions that you will be flying through the executive suits and you will make it rain.
"I have a kid so I'll choose a 4 door sports car. My single friend will go for the lambo. We are headed to the same destination. It doesn't mean my friend will make it any faster or any slower. It's irrelevant. He might get a flat and I might take a detour to check out the scenery"