Seagate Barracuda's have multi-tier-caching (MTC) built-in, and the Pro models can hit upwards of 250MB/s sequential read/write, I think it's typically the fastest hard drive on the market currently. I think usually the larger sizes perform a bit faster.
My 4TB Barracuda Pro does about 200MB/s and I can't say I've had any issues accessing RAW images, large ISOs, etc from it.
What do you think of the ST10000DM0004? It can be had for $378 Prime day sale. Would that be a reasonable increase over my 4TB Black? I know I can look at the numbers but what is your anecdotal seat of the pants opinion?