I love, love, love Maybelline products. They're probably my favorite drugstore brand items to purchase. I've tried their Colossal Volum'Express mascara, a metallic eyeshadow (Copper Craze), Dream Bouncy blush (Pink Plum), Fit Me! Foundation, Mineral Power concealer, Baby Lips lip balm, and a Color Sensational lipstick (Born With It). I'm happy with every single thing I've tried from them, but I don't think they're one-size-fits-all.
The foundation and blush in particular are pretty limited (Fit Me! is incredibly sheer and offers close to nothing in coverage, but does a good job eliminating sallowness. Dream Bouncy blushes have a nice texture but the complaints that they aren't super pigmented are pretty on the money. And Baby Lips does instantly make lips look better and has a nice glossiness, but doesn't work wonders in terms of moisture. It's not bad, it's not the best). However, the remaining products are great. The mascara is the darkest, and best at volumizing and lengthening mascara that I've tried so far, the shadow was pigmented and not powdery/dry/chalky, and the lipstick was a perfect dupe for MAC's Creme Cup, a great MLBB shade (but did have a strong scent).
Love Maybelline and recommend their products all the way!