I personally would choose Rosalind. I was accepted at Rosalind and not but NU but I honestly, given the chance, would've chosen Rosalind anyways.
Cost is important because once you have your license, it doesn't really matter where you got your doctorate from. I, however, looked at the curriculum very carefully. Rosalind offers inter-professional, which is something I wrote about in my essay and something I would like to apply once I am a PT. NU is more researched based, something that I currently do not have interest in.
Like I said, I would consider the cost but also what the focus is going to be. Not all DPT programs are the same when I comes to learning about the profession and applying it.