We had some recent threads on these, btw:
I have a couple Kobos and like them well enough. I switched from Amazon/Kindle a few years ago. They have (front/side) lights and color these days too, like the Kindles. And some models have physical page turn buttons, which I really like. They’re waterproof too, so you can take them into bathtubs and pools and hot tubs and such… that’s oddly where I tend to do a lot of my reading, lol.
They have library ebook support via their Overdrive integration: Borrow eBooks from the public library using your Kobo eReader – Rakuten Kobo
As for bringing your Kindle library over, ah, well… you cannot legally do so due to the DMCA (cracking their ebook DRM is illegal in the US, in and of itself). There may or may not be per-se illegal ways to do that on your own, but you have to search for that elsewhere; we’re not allowed to discuss that here.
Sometimes authors will sell DRM-free ebooks on their site, or on the DRM-free section of the Kobo store: https://www.kobo.com/us/en/p/drm-free
Kindle generally has a larger selection of books, both because authors/publishers can be lazy and because sometimes Amazon pays for exclusives. And on Kobo you don’t get the paper + ebook + audiobook discount that Kindle used to offer, or reading/listening progress sync (where you are in the book) across multiple formats. So the marketplace and ecosystem offerings are generally strictly worse, but not by a whole lot. About 80%-90% of books that have an ebook version, in my experience, are available on the Kobo store too. But more than a few times I’ve seen Kindle-only versions.
But the devices themselves are fine. Comparable to Kindle, and not noticeably better or worse in my experience (after having owned like five Kindles and three Kobos and a few other e-ink devices).