Although I am a fan of MAC foundations, this one doesn't really do it for me:

LOVE:
- the coverage is medium to heavy, so it covers all my color imperfections (mild acne scarring, etc)
- the price is cheaper than lots of other department store brands
- the colour matches my skin tone really well (initially)
- in the summer it keeps my shine under control without being too matte
- mixing this foundation with strobe liquid makes it look a lot like MAC hyper real foundation (there are no MAC PRO stores near my house)

LEAVE:
- if i don't use a primer, this foundation has a tendency oxidize and turn orange on me. I know that with a primer it stays true to its original colour longer, but i prefer not having to use primer daily as it cant break me out, so i save primer for special occasions.
-if my skin is the tiniest bit dry, it accentuates any flakiness - NOTE that this foundation is not for those with dry skin!

OVERALL: There are things that I love and things that drive me bonkers about this foundation. if you're someone who changes their foundation with the seasons, this foundation can really stand up to my summer oiliness.

Not sure if my skin is different from all the rave reviews so far, but I absolutely detest this foundation. It's heavy, does not look natural in natural lighting and worst of all, it oxidizes!

The oxidation is one of the recurrent problems I've had with all the MAC foundations and one of the reasons I won't buy them anymore. The color selection in store is great - I'm spot on for a NC35 and it looks fine at the time. However, as the day goes on and you start sweating, getting exposed to light, etc... your face becomes orange! I had this issue with Studio Fix powder and also with the liquid version. I thought the liquid was worse that the powder version.

Although I love MAC, their foundations are terrible for me for regular wear. If I need super thick coverage for a short period, then I can use it. Otherwise, steer clear!