I've had companies in a few different jurisdictions, including a Delaware C Corp[1] and currently an OÜ through Estonia's e-residency program.

Yes, it is fantastic and delivers on all of the promises. The only potential headache is that you must collect your e-residency card from an embassy which, depending on your location, might require travel to a nearby country.

I used Xolo but there are lots of agents in the directory. I like and recommend Xolo. No idea what the supposed issue with banking is, all of the agents have banking relationships and you can also use Revolut and Wise. My bank account was opened same day as the company.

Your details are published on the public register. The moment your registration is published you'll get lots of emails offering services, like banking (some people pretend to be Revolut but are actually just sending you affiliate links). Don't publish an email address you care about.

[1] The problem with forming a U.S. company is that all of the formation agents are layers on top of a convoluted nightmare. The formation agent can do their best to abstract away the complexity but the moment you have to peak behind the curtain you'll find yourself face to face with something very scary. The Estonian e-residency program is integrated all the way through.