If you make the switch and want to port your number, Sprint has a promotion that might be of interest to you. Sprint will give ya 125 bucks credit on your bill after 60 days of service. You have to apply within 72 hours of porting your number to get it, so dont forget.
https://www.spcconsumer.com/
Details: http://www.sprint.com/landings/portcredit/?ECID=vanity:switchtosprint
https://www.spcconsumer.com/
Details: http://www.sprint.com/landings/portcredit/?ECID=vanity:switchtosprint