What cell phone company has cheap international texting for a prepaid phone?

Instead of paying per text on my own cell phone, I was thinking of getting a prepaid phone for my international texting, since I will be texting internationally alot pretty soon. Is there a plan or a prepaid texting card you can buy for that?

T-Mobile is the cheapest when it comes to prepaid but i dont think they have a international texting plan for prepaid phones, go to their website and you should be abel to get the details from there!