I felt this way for a while, but I have a hard time arguing that my 15&quot; Retina MacBook Pro is too large or heavy.  You don&#x27;t even get quad-core on anything smaller, so the performance jump between a 12&quot; &quot;New Macbook&quot; and an 11&quot; or 13&quot; &quot;Macbook air&quot; is fairly marginal.  I&#x27;d expect that gap to close in the next product cycle as well, since the 12&quot; MacBook is the first run, has some heat issues, etc..