I'm on a (hypothetically) perpetual promo that costs me $35 per month for their better tier, which for me mostly differs from lesser/cheaper tier in that the first 50GB of data I use in a month has a higher priority than the cheaper ($25) tier.
Performance is fine for my usual needs, and native Verizon coverage is excellent in my neck of the woods.
(Why so cheap? No stores. No bricks, no mortar. No support outside of chat. No roaming. No 3G, even in places that might still only have 3G coverage. LTE and 5G only.)
I use project genesis because they were giving away 21 months of service for free if you did some basic tasks for a couple weeks. I'm on month 6 or so of completely free, unlimited data/talk/text.
I hope they last long enough for me to see it through.
Edit:
What I would use without PG, which is what my wife is on, is US Mobile. 10GB/mo for $15.
I just did it all in about 5 mins from bed each morning by calling/texting myself.
My household of 4 adults independently chooses Visible (cheapest tier, $25/mon which offers unlimited data (and and unlimited hotspot, though capped at 5Mbps)). Due to the slow hotspot speeds I might migrate DW & I to US Mobile which offers high priority high speed hotspot (up to 30GB/month at about the same price when shared across 2 lines) which could be valuable when we're traveling.
My biggest complaint is that they don’t seem to take security as seriously as they should. They’ve developed a reputation for frequent security breaches. I’m not sure that any of the major networks are great at that. Somehow a scammer was able to order 2 brand new iPhones and charge them to my account when I was still under Sprint. Customer service dropped the charges immediately when they saw the shipping address was far away from anywhere we’d ever lived, but it was still frustrating.
$30/mo unlimited everything, and I average 50gb/mo with tethering. Uses both the Verizon and T-Mobile networks, best of both worlds. And very happy to not be paying $100/mo anymore.
Support tends to be wishy-washy but each issue I've had has been resolved, so I can't complain really. I think I've had two issues in the 3 years I've been with them. Maybe 3 conversations with support total? The third was getting assistance flipping to eSIM as it had just rolled out at the time so there wasn't a super clear solution (to me) at the time.
Oh, I'm on the Verizon network, and have never seen deprioritization. I am in a small town though, so I'd be shocked if I was going to encounter it, probably larger cities it becomes a thing.
Fi: free international roaming in most countries, good tether speeds in urban areas in the US, 4 additional data SIMs at no cost for robots and other hardware projects that just use data from your main plan
Visible: better rural US coverage and fills in a lot of Fi's coverage gaps
I've never used eSIMs but seeing as they're just bytes, I would imagine you could switch them much like wifi networks.
You can switch which network is used for mobile data in the settings. (As much as I wish it had an option to failover to the other rapidly ...)
I miss Tello, thought. The Sprint network used to be the strongest and most reliable in our area, but after they got bought and shut down we had to switch away.
The lack of any fluctuation in billing make it easy for me to offer lines to extended family.
Experience is definitely subpar coming from T-mo - at times slow/laggy. But it works well enough.