rMBP integrated can't take HD youtube video's without stuttering from time to time. Plus when I write (like I am now) sometimes it stutters and then what I wrote suddenly dissapears even though its still there. A restart usually fixes these issues however but I restart my computer once a day as it is anyways. These MBP's of which this is my 2nd one now definitely are not just "flawless" products. There is always some issue.