Hi all, Am looking at getting the 27" iMac 5K (late 2015) to replace my badly aging late 2008 unibody Macbook. However I'm at a loss as to which configuration would be bang for buck with enough headroom to last me for the next 4-5 years. My needs are relatively simple - basic 'office' related tasks such as web browsing, email, productivity tasks such as word processing, power points, excel etc. Entertainment would be a big function as well - managing my vast music collection, Netflix, Spotify etc Though I'm not doing this now I would like to get into coding for iOS and basic photo editing on Lightroom/Pixelmator/Photoshop as well as playing around in Garageband. I don't have a monster camera at the moment just shooting off an iPhone 6 but I might get a Sony Alpha 7 down the line if time and budget allow. I was initially thinking of getting the base 1799 iMac - 3.2 ghz core i5 and Radeon M380. I'll definitely upgrade to the SSD (still deciding between the 256 or 512 GB). However I'm worried that the GPU might be a bit weak in this base system. I've read reports of screen tearing and laggy Mission Control in the late 2014 rImac on Yosemite but not sure if this has been solved in El Capitan. I'm just worried that the M380 GPU might be a bit weak to drive OS X on this 5K screen. I do not game at all, and video editing will probably limited to iMovie probably twice a year if ever. I've been poring through the threads here on M380 vs M390 vs M395/X however most of the feedback is gaming related which is not of concern to me. Should I upgrade to the 3.3Ghz i5 (or even the 4.0Ghz i7)? Geek bench scores for the even this Skylake 6600 3.3 CPU seems quite a bit higher than the 6500 3.2 version. Will I notice any difference? Will it help the system feel snappy in 4-5 years. I get the feeling CPU improvements have been fairly limited in recent years and most people apart from gamers and video editors have more than sufficient CPU to work with these days. Am definitely not looking at the Fusion drives - even the 2/3TB versions. I'd rather have more speed with the SSD and use external drives via Thunderbolt or USB 3.0 to house my media collection. However I'm not sure if 256 GB will be sufficient. I won't be installing Windows via Boot Camp but might have a very light and small Windows 10 installation via Parallels to open files from work that have compatibility issues with Mac OS X. Pls suggest the best configuration of the late 2015 iMac 5k based on my needs above. If my wife would allow I'd max the hell out of the thing, however I need to justify the upgrades on a $/performance ratio. Thanks guys!