We've had Starlink through 10 states and it always works, but sometimes the speed is throttled with the RV plan. The latency is alot lower than with cell tower Internet and I've seen the speed is between 20/Mbs and 175/Mbs. Another upside is that the upload speed is faster, so putting my Youtube videos up takes less time.
We've had terrible cell phone service with Mintmobile, but when the Starlink is up we can do wifi calling and text. I'm looking at other plans right now, but we have a full year of Mint paid for already.