I love MAC also. But I also use whatever works for me in whatever cost range. Here's a little peek into my makeup bag:
MAC Studio Fix Power (NW 50)
MAC Lipliner (Chestnut)
MAC Lip Glass (Clear)
MAC Lipglass (Oh Baby)
Sinful Colors Lip Gloss (Spaz Attack)
Posner Plexi Shine Lip Gloss (Desire)
Prestige High Shine Lip Gloss (Hustle)
Iman Creme-to-Powder Foundation (Earth #2)
Sinful Colors Lip Stick (Naughty Nature and Wild Cherry)
MAC Lip Lacquer (Shellac)
Sinful Colors Eye Liner (E4-Licorice)
Sinful Colors Lip Liner (P21-Wine)
I really can't wear MAC lip stick, because it dries out my lips. Their glosses are the best though.
If you love MAC colors, yet can't stomach the MAC price tag, you may want to check out Sinful Colors. They are the inexpensive MAC knockoff. Here's the website-
Sinful Colors
You can find them just about everywhere. I usually get mine at local beauty supply stores, and I actually found it at Nordstrom Rack a couple of weeks ago, so you may want to check there also.