Y is cool because that is the end the team runs out from. You will have a good view of the jumbotron. Also, the concessions on the north/west are much better than the south/east.
The chairbacks are mainly in the north uppers. I think a few rows in the overhang have them, maybe last 2 rows? Personally, I like the side angles better. Better perspective when plays are going the other way.
Y is a great section have has season tickets in y for 20+ but depending how high you sit up you might get into the blue hairs but they good seats..what row will you be on?
I love the Y section, honestly my favorite seats in Neyland, mostly shady, great view of the jumbo tron. And I think the long view of the field is a great way to watch a football game. I love the chairs that are in some of the higher sections on that side of the feild as well.