I haven't tried it, I've been using Max Factor Miracle Touch which I like a lot. A friend of mines bought L'oreal Infallible though and wasn't particularly impressed. She said it went on quite cakey but I have no personal experience with it myself.
I was actually a little apprehensice about trying Miracle Touch because I wasn't sure it would live up to the claims in the adverts. Didn't want to buy into the ad campaign and then be disappointed but I was pleasantly surprised. Looks really good on, far better than my last foundation.
Maybe now I might stick to one instead of buying something different every other month.
I just bought it and it's been working great so far! I'm surprised by all the negative reviews... it probably is a heavier coverage than some might like but I only use one pump and apply some on my forehead, nose, and chin.. and then I blend like crazy with my foundation brush so it looks natural to me..
I also got some of the lipstick but havent tried it yet!