I'm glad you'll be giving Evernote another try. While it takes a bit more effort to learn it can do much more than a simple text only note app.
Though, personally, I prefer Reminders for my grocery lists. Mostly because I can tell Siri to "Add dog food to my shopping list" and it does. Making adding thing to my shopping list 'that' easy is the only way things get on my shopping list.
That's on my iPhone, of course. My iPad is rarely with me when I happen to think of something I need to get.
I do keep a Wish notebook in Evernote, and add things to that for later review. Unlike the random thoughts (and/or immediate needs) that inspire my shopping list, the wish list is almost always triggered by something I'm browsing, reading, or looking at; so capturing it in Evernote is a natural.