Great!
I'm a professional technician who has way too many projects going on at home. I used to have paper notebooks laying around everywhere, filled with technical drawings, schematics, bits of code, printed out datasheets, etc. Now that everything is in one place, I feel much more organized. And clearer too, as I'm not having to use an eraser to fix mistakes, or leaving scribbles around because it's easy to use the editing tools. There was a short learning curve, but now it's second nature.
It's not perfect; nothing is so I'm not complaining. I dislike the idea of buying replacement stylus tips, cut&paste seems like something that should have been a feature from the beginning (it still isn't, but only a software update away. Hopefully..), and the price is way too high (I bought a refurbished unit). Kindle support would be nice so I don't have to lug around a Kindle as well, but I understand licensing issues.
But as someone who values tactile feel and ease of organization, my Remarkable is great. It's probably not for everyone, especially at the price, but for me it works very well for what I do.