Other than MAC:
1. Stila - The texture of the e/s are amazing!
2. NARS - Just a great high quality brand
3. MUFE - Foundation and extremely pigmented products
4. NYX - The single shadows, and lip glosses are a few of my favorite products.
5. StarMakeupHaven - I think that their single shadows are as unique as MAC, but half the price.
I don't really care for Urban Decay, besides their eyeshadow primer and eyeliners. But, drugstores have come out with comparable eyeliners, IMO.
I also don't really care for too faced, the texture of the products feel cheap to me. :-/
Other Brands to try, but I haven't yet:
Dior
Chanel
Guerlain
Kat Von D
Illamasqua
Smashbox
Benefit