@phill I've used a bunch and I'm sticking with 11ty as it's really simple and easy to maintain.
IMHO (opinions vary here) the developer experience for _more complex_ stuff (e.g. if you're building a component - heavy project) could be better.
I personally like that because I have fewer excuses to yak shave instead of writing.
Sveltekit and Next.js are nice too. IMHO Sveltekit feels closer to working with regular HTML. I use both for other projects.
All work with vercel/netlify OOTB.