I like www.zerofasting.com/. It covers what's important on the first fold. Each other fold explains more about the app. There are a lot of subtle UX cues that make the experience better.

I'm a fan of milkshake.app/. It inspires curiousity, which drives exploration of the product site, while still communicating the value proposition in a concise manner.

Can't believe I'm the first one saying this, but... hey.com! And basecamp's. tbh, I have a thing for copy-heavy landing pages. I tend to think they set you apart from the typical SaaS landing page that has become so overused.

I recently stumbled upon strongherapp.com and love the colors & introduction into the App's most important features.