Ok gang, I need to bounce some ideas off you. After 3 months of patient reading and careful evaluation of real-world results versus my current workload, I’ve decided on an 18-core iMac Pro, 128 GB of RAM, and Vega 64. The last thing I need to decide on before pulling the trigger is a 2 TB or 4 TB SSD. Perhaps your thoughts can help me decide. I am a full-time photographer and videographer. Some of the subjects I focus on require me to travel a fair amount, usually 115-145 days a year. When I’m out in the field, I spend the majority of my time shooting, and then I squeeze in time to review, catalog, and cull through my footage while I’m on the road, whether it’s stills or video. Once I get home, the iMac takes over and the editing picks up in earnest from there. For stills and video, I currently use two Canon 1D X Mark II’s, one Canon 5DsR, and several small action cameras. I primarily shoot on the Canon 1D X’s and almost always shoot at 4K 60 fps, which uses up a fair amount of storage. Currently, I am not shooting 6K or 8K, but I could see that transition taking place in about 2 years or so. For my upcoming iMac Pro, I would like to rely on the internal SSD for all of my current jobs and then once those jobs are complete, I would send them over to my RAID 5 array. I prefer to work on my jobs via the internal SSD due to the sheer speed. (Why chance crippling the 18-core beast with any possible storage bottleneck?) 2 TB should be enough to cover my needs for open jobs during 2018, but I’m not sure if that is enough in the future. The obvious approach would be to max out the iMac Pro with 4 TB of SSD storage. However, I am considering ordering the 2 TB SSD in the iMac Pro and then taking the $1,800 saved and applying that towards a 2 TB OWC ThunderBlade 4 or a 2 TB OWC Envoy Pro EX (VE). Both of these excellent externals are nearly as fast as the internal SSD on an iMac Pro and the idea is to use the external SSDs out in the field to work on my media files. Then after I return, I would plug the external SSD (with all my files) into the iMac Pro where I could instantly resume where I left off. I’m torn though. Would I regret not getting 4 TB pf premium storage inside the iMac Pro? Or would I be just fine with 2 TB of ultra-fast internal SSD storage and 2 TB of very fast external SSD storage? I'd love to hear everyone's thoughts as I sort through this. I'd like to pull the trigger on my order in the early part of next week. Thanks!