For anyone who has tried switching over, what's your experience with them been like? Were there any hidden upsides or downsides you weren't expecting? What about coverage? It's really hard to ignore them when they keep spamming ads to YouTube, my favorite podcasts, etc.
I use US Mobile, who resell T-Mobile and Verizon services. My family use very little data, so we only prepay for 1GB/mo. Four lines are $40 a month total.