So from my experiences of traveling to and from Hershey comparing it to Scranton, I'd take the unfavorable opinion and pick Scranton as the better city. Hershey, similar to Scranton, is in the middle of nowhere. There is literally NOTHING around it other than fields and farmland, once again, similar to Scranton. At Hershey, there aren't as many "younger" students-you basically have the kids at PSU Hershey. To compare populations, according to the last census, it's approx 14K at Hershey compared to 74K at Scranton. In Scranton, you at least have 3-4 other larger universities/colleges (Univ of Scranton, Marywood, Lackwana) around there so it still maintains the younger environment. Now obviously Scranton is in a rebuilding stage and it's not anywhere near nice as Philly/Pitt or any major city for that matter, but I think it holds its own for the needs of med students in comparison to Hershey.
Now as for academics. I would favor PSU because they have a more renown program. I don't think anybody will deny that. On the flip side, when talking to two friends that are first and second year students at TCMC, they said preclinical education was amazing. The faculty are very supportive and have open door policies, and are vested in their students success. I also know a 3rd year and a kid who graduated and matched Derm from TCMC who said that the rotations were pretty good and on par compared to schools such as Drexel, PSUCOM, PCOM when they talked to their friends from those schools. One of the big differences will be the population though. You will be dealing with an older population with many long-standing health problems and poor access to healthcare, but will not be seeing much inner city pathology. At the same token, you will not be seeing much inner city pathology at Hershey. As for TCMC being on probation, they were on probation for financial reasons as far as I recall, and not academic reasons. Theyhey became fully accredited last year or the year before by LCME.
The other caveat is that are you interested in research or public health. Research will draw you to PSU because they definitely draw in more $$ than TCMC will. If you're interested in Public Health Research, TCMC has stronger roots in the community to do such research.
Ultimately it comes down to personal goals. I don't think you can go wrong either way!