I'm a resident at UMASS, and while our Heme-Onc department and fellowship program are not (IMO) among the best on the East Coast, people have done very well in recent years in the match, and there are increasing #'s of great research opportunities as UMASS is getting more NIH money every year. Our Heme-Onc fellowship matches over the past few years include Duke, JHU, Vandy, BIDMC, and of course UMASS. Probably, of the programs you mentioned, UMASS has the most research money (unless Fox Chase is a Drexel affiliate; I always thought that was Temple affliated, no??), and the strongest affiliated medical school. Although the month I spent on q4 o/n call with cross-coverage and combined ICU/floor admissions at Milford last month was tough and occasionally aggravating, I have been very happy here.
Lahey is a very nice program; I went to Tufts and rotated through their GI dept. so I know a little about it. However, it is also a very young program with some growing to do, and as a small, one-hospital program, was not the best match for me personally. However, they do have strong Cards and GI fellowship programs if you decide you don't want to do Heme-onc, and Lahey grads usually have a leg up in getting spots in these programs.