I did an away at UConn and absolutely loved it. I ranked them very highly and would love to match there tomorrow. Great residents, excellent faculty, and strong operative and academic experience. You do two weeks at UConn in Farmington (more elective cases) and two weeks at Hartford Hospital (more trauma).
I can't say too much about UMass so hopefully someone else can help you out, but I didn't even interview there because they have a mandatory two day interview (Fri & Sat) that would have made me miss two interviews. I thought that it was pretty inflexible of them especially since the Sat was 1/11/03 one of the most popular interview days. Best of luck!
18 hours and 30 minutes to go.