I'm very undetermined to which new rMBP I should choose, and I'm constantly changing attitude to what to choose. Let me explain: Currently sitting with my 15" mid-2010 MBP, connected to a Dell U2715h (1440p), with following specs: i5-520M @ 2.40 GHz (dual core) 8 GB PC3-8500 DDR 1066MHz RAM GeForce GT330M 512 MB dedicated graphic card 320 GB HDD + 120GB OWC 3G 320 GB = Files 120 GB = OS and apps I use for a wide range of things, which varies from normal user usage to heavy load usage. Everyday usage (Web, mail, documents, streaming) DJ'ing (iTunes, Rekordbox and Traktor) Music production (Logic Pro, Ableton Live) Photography (Lightroom, Photoshop, Premiere Pro) Digital designer (Illustrator, InDesign, Photoshop) I don't do gaming, 3D visualization or more than one external monitor. The 15" mid-2010 MBP struggles with high temperatures and high CPU loads, and very time consuming photo and video renderings, which is why I'm on the lookout for a new rMBP. Obviously I'm very interested in the upcoming new rMBPs, but I'm unsure if the 13" will fulfill my need and expectations. The mobility factor is not that important for me as I'm already used to the size and weight of the 15" MBP and as the laptop is mainly located on my work desk, connected to monitor, external HDD, USB hub, MIDI keyboard, etc.. The price although, is also a valid factor in this decision process, as I would expect a proportional better machine, giving the price difference - I'm not looking for "the best of the best", but more like looking for at decent match to my needs and expectations. What I'm sure I need as minimum: - 16 GB RAM - 256 GB SSD This can delivered in the 13", so what I'm unsure of is CPU and graphic card, which leads to the ultimate questions: Is the i5 dual core enough? or do I need the i7 quad core? Is the Intel Iris Pro graphics enough? or do I need the dedicated graphic card? (i.e. AMD Radeon R9 M370X - giving the current available 15") Thank you!