Frustration.. I'm getting there..

I'm trying to get a phone with unlimited texting. I need it, badly. I go through so many minutes texting on my stupid prepaid phone, it ain't funny. Almost everyone I know has unlimited texting, but you see, we are on a very tight budget, and I've been snooping around trying to find the best and cheapest deal.. Haven't come up with anything much to be honest, maybe it's not the right time for me to get it? I don't know, I'm about to my witsss end, and believe, most nothing ever bothers me, so yea. Witsssss end takes awhile to get to. But,, Oh well, I maybe aren't meant to have it. I'll keep looking around to see what I can find. Tell me, which is better... Sprint has unlimited texting for $49.99, with 450 anytime minutes and unlimited nights and weekends with anyone on any netowrk, which I would never use, Orr,, AT&T has 450 anytime minutes, with rollover minutes each month, for $39.99 plus $20 for unlimited texting. I'm thinking AT&T because they have rollover, which Sprint does not. I don't know. I'm going to talk to my mom to figure out my options.