What iMac to choose

I have the option of getting one of the below, can't decide which to go for, any advise to use with OCLP.

iMac 15,1, i7 4790k, 32GB RAM, 512GB SSD.

iMac 17,1, i5 6600, 8GB Ram, 2TB Fusion Drive.

Thanks.

submitted by /u/maddogspeighty
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