Right now I would buy the new 21" Retina iMac with 2 TB Fusion Drive and 16 GB RAM. As I bought my last iMac almost 10 years ago I don't know how prices/specs change over time. How likely is it that prices fall a bit in the first three months of 2016 especially for the Fusion Drive option and/or the RAM upgrade? I don't care if they will change the specs of the CPU as it seems to be the least important part of a Mac nowadays. Also I don't buy the iMac as a gaming machine so I do not care that much about the GPU.