MUA is a brilliant brand whilst i have not tried there palettes there individual shades are extremely pigmented, quite big as well in size which is brilliant. Affordable, great quality and the color really does last a while but if your looking for a certain type of palette maybe more neutral shades or a palette which has everything for any smokey eyed look you can think of. Have you tried SLEEK? there really good value and there pigments are even more brighter than MUA.
Personally i adore both brands but each of them have different products and shades the other does not so mix and match for me is the way forward.