I have not interviewed at Tufts, I have been complete since October. I do however know a 1st year resident at columbia who got his MD at Tufts and said that it was worth every penny. He had a great time, and said that he felt the education itself was also great. I, however, think that it also depends on where your other offers are coming from. Perhaps if you got into a school which is on par with tufts, and costs less it might be a better choice. all in all i hear lots of good things about tufts from people who go there, even though there has been a little bit of Tufts-bashing here on SDN. ultimately it is a decision you will have to make based on A) what you think of it when you visit and B) where else you get in.
Since I also haven't heard back from them I too am curious if they have sent out any post-secondary rejections, I know a load of people who haven't heard yet, but havent heard of any rejections.
good luck!