> it's generally a C-corporation for tax purposes, federal and international law
A single-member LLC electing to be taxed as a corporation will still be sued as an LLC (i.e. it can be pierced more like an LLC and less like a corporation), dissolved and maintained as an LLC and enter into contracts, open bank and brokerage accounts as an LLC, and have the same difficulties raising outside capital as an LLC.
Disclaimer: I am not a lawyer. This is not legal advice.
TL; DR If you’re raising outside financing, Delaware. Otherwise, California is probably fine. (Assuming you have a nexus in California.)
Disclaimer: I am not a lawyer. This is not legal advice. Don’t make these decisions without a lawyer.