Thank you for buying your 2017 iMac 5K and/or iMac Pro at B&H Photo, and for upgrading it at OWC MacSales.com. Both vendors made and make my extensive tests of the Apple iMac Pro and other Macs and gear possible.
Not sure which Mac you need, or how to configure it, plan for backup, etc? Consult with Lloyd.
I’ve switched my everyday work machine to the iMac Pro 10-core 3.0 GHz 64GB 2TB Vega 56 (as in this specific iMac Pro) for a week or so of usage for daily work—the iMac Pro is on loan from B&H Photo. So far I don’t notice any day-today benefit over the 2017 iMac 5K.
Thing is, the 2017 iMac 5K looks to be the best computing value ever produced by Apple. Nearly all of the readers of this site shoot raw, and so should wonder how fast raw conversion is on the iMac Pro vs the 2017 iMac 5K—assumptions are a very bad idea in general—get proof.
See also my buying guide and recommendations.