MAC is my go-to place for makeup. Their product is superb and there are literally infinite ways to use the line. The makeup artists are required to go to school for a year or so before they can work there; they know the qualities of their inventory inside and out. The individuals working here are always very colorful and creative with their own makeup.
Sometimes it's tricky to get assistance, but if you're persistent you'll receive service relatively quickly. Beware, these stores can be packed! I've had my makeup done by MAC artists at other locations, and the results are usually stunning. Of course, not all makeup artists' visions align with one's own, so be sure to speak up about what you have in mind!
Any artist prizes their tools because they can make or break a look.I use MAC brushes exclusively; the quality is absolutely exceptional and they last for YEARS. Ask a MAC artist to help you select the essential brushes--they make all the difference in the world when it comes to applying makeup. It's an investment that you won't regret. Trust me. Buy the brush cleaner as well. There's nothing worse than getting a nasty eye infection due to a germ-infested eyeliner brush.
I'm also a loyal customer because of Back 2 Mac--their recycling program--bring in 6 empty containers to a MAC store (not a department store counter) and you'll receive an eyeshadow, lipstick or lip gloss of your choice.