Hey guys, I recently sold my 2011 MBP [quad 2.2ghz I7] to 'upgrade' to the new haswell machines. Given the time difference I was expecting the new machines to be much more powerful, but this is not the case. I have bought the following RMBP to compare : 13" 2.8ghz I7, 16gb ram, 512gb SSD 15" 2ghz I7 8gb ram, 256gb SSD To cut the story short I bought the 13" online and was slightly disappointed with the performance with Rhino 3D so assumed I needed iris pro, so just got the 15". However, basically the performance in orbiting the models is identical [not impressive]. I have compared this against my girlfriends 2011 MBP [same specs as my old one] and it is super fluid on the same model. So basically, given the evidence I have, I am going to have to spend AU$3200 on a machine now to match a 2.5 year old computer !! What the hell is going on at Apple as so far my impression in real world tests is that the iris pro is not good enough for professional 3D applications . Anyone else experience this or am I just missing something?