I've been pleasantly surprised by Maybelline many times! I haven't tried their shadows, but they have several decent mascaras, their pressed and loose powders are surprisingly good, and their Age Rewind concealer is magic. And just today I bought one of the new Color Whisper sheer lipsticks, and I've only had it on for a couple hours, but so far I like it a lot. It reminds me a bit of Revlon Lip Butter, but feels lighter on and is more moisturizing.
The only thing I've tried of theirs that I haven't liked is foundation. I've tried two different kinds and really disliked them both. It's been at least 5 years since I've tried any, though, so maybe they're better now.