I need some advice on luggage carrying on a 99 Supersport. I start school again next week and am driving about 70 miles each way. I've got to carry around 6 books (about 25 lbs) What would be the best thing to go with, a backpack or tail bag? It seemed a little far to carry all the extra weight on my back. So I am leaning towards tail bag. Can anyone give me some good brands and tell me how they like them?