I always used Chanel as a single girl and loved it so much. All their products I've ever tried have been pretty amazing. However, when I got married, I switched to Kiehl's with the whole 'buy a house' thing going on. I really love Kiehl's, too, but not as much as Chanel. It doesn't much matter which line of Chanel, I've liked them all. But with Kiehl's, I really prefer the Abyssine line.
BTW... one thing great about both is the samples. Chanel is generous with them, if you go to a counter and express happiness over them. I've had them really load me up and I tell them how helpful that is for travel. But Kiehl's also let's you pick three samples with every purchase and that's very useful for travel.