The verdict
For most lean B2B founders shipping a credible marketing site, Squarespace is the faster, calmer choice and the one I'd reach for first. Templates are polished out of the box, hosting and domain are bundled, and you'll have something live before you'd have finished Webflow's learning curve.
Webflow earns its keep the moment design becomes a differentiator , a bespoke brand site, complex CMS-driven content, or a hand-off where you want clean HTML/CSS you can export and self-host. That control has a price: Webflow's canvas mirrors the CSS box model, so it rewards people who think a little like a front-end developer.
If in doubt, start on Squarespace. The cost of switching later is real but recoverable; the cost of fighting Webflow's learning curve for a five-page site you didn't need to is wasted weeks.