I was on AT&T for a long time. Was spending ~$125/mo for 2 iPhone phone lines after taxes and fees.
Now I am on Mint Mobile, and it's honestly been fantastic. I pay about $120/month (pre-paid for 6 months though) for 5 lines now (kids!), with way more cell data per line. Each line can be on a different plan, too! Very occasionally a text message will be a bit delayed, but I mostly use iMessage anyways. Have not had any other issues. Well worth it. I highly recommend the switch. You'll save a ton of money.
Now I am on Mint Mobile, and it's honestly been fantastic. I pay about $120/month (pre-paid for 6 months though) for 5 lines now (kids!), with way more cell data per line. Each line can be on a different plan, too! Very occasionally a text message will be a bit delayed, but I mostly use iMessage anyways. Have not had any other issues. Well worth it. I highly recommend the switch. You'll save a ton of money.