Looking to jump back into OSX from Windows. Refurb prices are obviously quite good at the moment, but I can potentially access edu price via my wife. So the prices work out pretty similar. I'm comparing a top end 15" model vs a refurb mid 2012 model. Basically: 2.7 GHz (i7-3820QM - ivy), 16GB, 768GB SSD, HD4000+650M/1GB vs 2.3 GHz (i7-4850HQ - haswell). 16GB, 512GB pciSSD, Iris Pro+750M/2Gb The Geekbench numbers for the 2.3GHz Haswell don't seem that much more than the faster 2.7GHz Ivy. GPU performance is potentially similar, hard to say until more benchmarks come out. Although the HD5200 will be far better than the HD4000, I'm not sure how much effect this will have on battery performance. Is the extra storage/refurb worth it vs faster ssd/iris pro/newer system? Any issues with the older models?