For a limited time, you can "go unlimited" for only $65 a month for two lines of T-Mobile prepaid service, which totally obliterates the competition without requiring a lot of jumping through hoops. All you have to do is visit a "participating" brick and mortar store to activate said heavily discounted lines including "endless talk, text, and high-speed data."
In case you're wondering, a T-Mobile One Prepaid plan normally starts at $70 a month for a single line, although that's not technically what you're looking at here. Instead, this is the Simply Prepaid Unlimited option that starts at $50, typically requiring an extra 30 bucks for each additional line. By paying $65, you'll thus save $15 compared to the standard monthly rates, which is not exactly earth-shattering but it's pretty cool for an already affordable plan with almost every possible perk and feature included.
The catch is T-Mo's Simply Prepaid plans come with no international data or features. Otherwise, you can do it all. Download and upload stuff at amazing speeds, stream video at up to 1.5Mbps, and even tether at 3G rates. Just keep in mind your data will be deprioritized "during congestion" if you exceed a monthly allotment of 50GB.
Unfortunately, there's no expiration date listed on the "Un-carrier's" website for this very enticing in-store-only promotion, so it's probably a good idea to pull the trigger before it's too late. And yes, believe it or not, this is an even better deal than Metro's best offer right now... as long as you don't mind that international restriction.