I have a similar question. I have narrowed my decision down to two options:
School A:
Top 10
At least 4 professors I could see myself working with
31k a year... BUT in a very expensive city (LA)
Definitely a more stressful environment... I felt like most of the students I met seemed pretty stressed
School B:
Top 20-30
Only really 2 professors I am excited about
Awarded additional fellowship on top of stipend: 40k a year in a very reasonable city
students seemed very happy
Everything makes School B such an easy choice but I really really like the research at A so I am pretty torn
If I am sure that I would commit to School A if they offered me more money, would it be appropriate to tell them my other offer? 31k is definitely livable, it would just be tight in comparison to 40k. I don't want to phrase it in a way that would take away the option of attending A if they don't match the other offer.