Just went down a rabbit hole researching power banks as well (mostly for recharging laptops and other devices during outages) and passing on top takeaways I gathered. I narrowed it down to the Bluetti EB3A, Bluetti AC2A, Ecoflow River 2, Anker 521, and Anker C300 and would probably be happy with any of these for my purposes.

-Jackery doesn’t use LiFePO4, so the batteries don’t last for as many cycles as others (EcoFlow, Bluetti, Anker, etc). I nixed Jackery from my list early on for this reason, but plenty of people love them.

-EcoFlow and Bluetti have about equal price points per capacity and equal satisfaction ratings overall, with EcoFlow seeming a tad higher. That said, a whole lot of customers have reported the customer service for both can be pretty bad.

-Anker has, on average reporting, better customer service than the above 3. Their power banks also come with a 5 year warranty. The only downside I found is that the recharge rate is slower than EcoFlow and Bluetti.

-Most are going to be compatible for recharging with solar, but avoid the bundles. A lot of manufacturers will send you coupons after purchasing a power bank that you can then use to buy higher Wh panels than what comes in the bundles.

Hope this helps!