I have the 5GB Tethering plan on AT&T. I got tired of worrying about throttling last year, and (before I jailbroke my 4S 4 months later), I wanted tethering after I had a situation where I lost my home internet for 3-4 days due to an outage. Sort of wish I had my unlimited back, but I'm surviving. I typically use 3-4GB per month so the 5GB hasn't been restrictive, and I can tether now on the 5 instead of waiting for a jailbreak. (and I didn't have to pay for the $$ jailbreak app to enable tethering when I had my jailbroken 4S).