Not too long ago I purchased a few things from MAC and I understand why everyone loves Girl About Town so much, it's such a vibrant shade of pink that it instantly makes you feel empowered!
I also purchased two eye shadow brushes the 239 and the 217. The 239 is great for packing on eye shadow and taking it under the lower lash line, and the 217 is the perfect blending brush as it smooths out the harsh lines I didn't realise my old eye shadow brush was leaving! The 217 also helps to create a softer day time look and a smokey evening look.
Let me know what your must have MAC products are and I'll take a look!