That is quite the combination of schools - those last three really have nothing in common with the first three (plus Tennessee).
My daughter just finished her freshman year at UT and loves it. She also considered IU, Kentucky (slightly), Ohio State, Wisconsin (slightly), and Miami (Ohio). Not Purdue, since her brother and dad both went there and she wanted to major in marketing (Purdue has a great business/management program, but more on the technical side such as logistics, finance, etc.).
One thing about UT is that it was the cheapest of the ones she looked at - even Ohio State and Miami as an in-state student. As you probably know, UT, like a lot of schools in the South, offer pretty generous scholarships for out-of-state students based on an SAT/GPA formula. She did quite well her first year (~3.9, with one A-), but I'm not sure how rigorous the program was for her first year. Campus is nice, though the dorms are not great. On the other hand, only freshman are allowed to live in the dorms. Next year she is living in a high rise apartment that is still being built. It's not cheap, but she'll be with 6 girls and each will have their own bathroom. She also joined a sorority, but only a small portion of the girls actually live in the sorority house. (I think there are ~400+ members.)
As I said, she loves UT, but has already mentioned that does not want to live in the South after she graduates. Not sure why, though.