What are the pros with a cell phone contract plan vs prepaid?

I’m mainly comparing contract phone plans vs Virgin Mobile in USA. Currently I’m paying 25$ a month for unlimited data (3g), unlimited text and 300 minutes. I use about 25–60 minutes a month. This is with Virgin Mobile and I’m running an Optimus V (which worked fine in the beginning but texting others can be problematic as the touch screen seems to be not working properly as in, I tap “b” it’ll enter another random letter for instance.)

Any who, can you think of benefits from going to say, Sprint on the contract? I know it’s about 80$ for unlimited data, unlimited text, and 300 minutes talk.

*Currently a student and don’t plan on doing any traveling out of the states (probably Canada if anything). But you never know, if I had a contract plan, would a Sprint plan even work overseas?

(The last time I remember being on a contract plan I was doing about 70$ per month and then went pre-paid where there were no late fees and significantly cheaper, however I wasn’t able to print out call records or build credit score? Are these the only benefits from contract phones?)

Thanks!