Hi everyone. Buying my fiancee her first Mac, and not sure which one to go with. She does a lot of photography, and this will be her primary editing machine. She's a big user of Lightroom, and also uses Photoshop sometimes for additional editing (when needed). That's probably the most taxing task she does on a computer, as the rest of the time she's browsing the web or listening to music. Workflow-wise, she works off my server. What I mean is that after a photo session, she uploads those unedited RAW files to a network drive, and her Lightroom catalog is also backed up to the same network drive, nightly (the network drive lives on a seriously over-specced server, with a ~30TB RAID10 array). Storage space on the iMac is not a concern, nor is drive performance (for her workflow; only for the system). Basically, I have $600 in Best Buy gift cards, plus a card for 10% off one item. I'm looking at the 2014 Retina iMac (3.5GHz i5, 8GB RAM, 1TB Fusion drive, Radeon M290x) for $2,250, and also the new 2015 Retina iMac (3.3GHz i5, 8GB RAM, 1TB 7200RPM drive, Radeon M290) for $1,980. The price difference is only $270, but it's still significant enough to concern myself with. According to various reviews, the performance difference is only about 10% different, in favor to the 2014 system (CPU and GPU wise). I will be replacing the RAM myself (4x8GB kit) to either system I go with, and will probably swap out the HDD with an Intel 200GB DC3710 SSD. My goal is for this system to last 4-5 years before being replaced. Thoughts? Should I send the extra $270 and get the 2014 riMac, or should I get the newer 2015 riMac? I'm sure either will suffice, and it's not like she is doing 4k video editing or anything like that. Thanks!