The guide is good for these sorts of questions.
Anyway, you know that Ting also offers T-Mobile coverage, right? T-Mobile has reasonably decent coverage on the lower peninsula.
There's also Consumer Cellular, who does a similar tiered model and uses AT&T coverage.
This said, if you only have one phone line on the account? There's cheaper carriers if you're using PAYGO levels of mobile coverage, such as with Airvoice, Puretalk USA and H2O Wireless, all AT&T MVNOs. Even if you need "unlimited" levels of talk and text but only a little data, again, cheaper options than Ting. Ting and Consumer Cellular's pricing only shines on multiple line billing.
Learn to use less, and you'll save more money. Also stay way from brands like Cricket, they're destroying what remaining legitimate competition there is in the prepaid mobile industry. Also think about what people suggest, and whether they're lining their own pockets with their recommendations instead of helping you find what
you need.