Samsung's 4TB 990 Pro is the best-performing, high-capacity SSD of its kind, according to TweakTown's review. Sure, it's $350 USD for a Generation 4 SSD and it's out of stock, but if you can find this storage device, perhaps it's worth the money. You could save a few bucks and get two of the 2 TB drives for $150 each though. Read more here. I'm still hoping to see some Generation 5 SSD's before I drop this kind of money.
Maybe the fastest drive in Generation 4 format, but what about Generation 5?
As Albert Einstein said, "I could have done so much more with a Big Al's Computer!".