On the other hand I experienced random WiFi problems upon wakeup, had to do a couple of hard-reboots, suffered the rainbow static problem and other miscellaneous problems with external displays. Lately I've been experiencing some weird issues with the sound system: I hear music in my headphones but some notification sounds are sent to the speakers.
As a first-time Mac user (after a decade with Linux) I must say this is quite a frustrating and "meh" experience.
Love the screen and the battery life though.
Glad to hear I'm not alone, my colleagues rolls eyes when I rant about the problems I'm having.
Side Note: It seems to me that the most problematic models are Retina MacBook Pros.