My mom (in her late forties so obvi has aging skin) has been using la prairie for a few years, and she swears by it now. it is insanely priced, but she has gotten amazing results from their eye creams and other products. I don't know exactly which products she uses, but i can testify she has really nice glowing skin, especially for her age. btw she has oily skin with large pores.
I'm actually using the skin caviar foundation right now because my mom got a sample in the mail, and i have to say it's really nice. I wouldn't personally buy it though, because i don't need to spend that much money on my skin!