I'd recommend them to everyone, but they've been sold to T-Mobile and I'm skeptical it won't be broken soon enough.
But for $180 a year I was getting 5GB data, unlimited voice+text. I also spent about $20 a year on roaming extras when I'd go to Canada for a couple weeks.
GoogleFi was probably my best experience when on android, but they didn't support iOS and their fee was notably higher than mint too. ($65 a month iirc?). GoogleFi was unlimited, better coverage, unlimited usage in Canada (my main roaming on home sim card) , and includes a bunch of extras like storage, youtube etc.