Hello, i've heard some people say that besides the screen and the optical drive, that the MBP 17" is actually a BETTER computer than the 15.4". Meaning it has less defects, less whine issues, and less heat, things like that. Also, it is rumored that the 17's Graphics chip is clocked higher. are these things true? this is seriously making me lean more towards the 17" rather than the 15.4" Please give me some info.