Hi there. Coming from a background of Ethnic Studies as an undergrad, I too was very concerned about this. From what I can tell, almost all of the top ranked, more established programs are very strong in quantitative research methods. That's not to say, however, that they don't put an emphasis on qualitative research -- they do. It's just that from what I can see, more of the higher ranked programs have older, more statistics based faculty members, whereas more of the mid-to-high tier programs tend take a more progressive approach to sociology. This often times involves faculty who rely more on qualitative or mixed methods research.
I had this dilemma when I had to choose between a higher ranked, more quantitative research based program (Indiana) versus and slightly lesser ranked, more diverse program (Minnesota). What I didn't realize at the time of applying was how much the rank of the programs affects your chances of employment after graduating (a considerable amount, btw). In the end, I went with the program I was more comfortable with. It also didn't hurt that they offered me more money.