Joining in on this one..
I've played with lots of the competition, and nothing does it quite like Evernote. - My biggest moan at the moment is the Gmail plugin takes an age to load!
But.. The simplicity of a shared notebook, shared with my Wife doesn't exist anywhere else. - Yes, you can pay for 2 premium accounts, but her use isn't high enough. I create 98% of the content.
I've just had a big notebook clean-up, exported a lot of legacy, deleted loads of old tags and I'm going to lean back into Evernote. Spoons, please don't let me regret this!