I can well imagine. I was following the pattern of the acronym RAID, "Redundant Array of Inexpensive Disks", so I didn't want to add a word. You definitely got lots of speed for your (or somebody's) buck, going from access times in milliseconds or 10s of milliseconds to hundreds of nanoseconds (or something like that). You jumped to Ludicrous Speed!
Unless you have a bottomless pit for a budget, you have to do it logically.
What I do is utilize traditional fibre channel SAN with 15K SAS arrays underneath for data. Mind you, that is still incredibly fast, but not like flash storage.
The all flash array, just for context is only 150TB of raw space. The cost was over 1/4 million for that small, ugly green box.
As you stated, the seek and read/write speeds are the goal so what I do is utilize the high speed disk in a very conservative manner.
I'll pin some high volume databases to it if a customer is willing to pay for it, but mostly, that space is reserved for a few operating system disks, and most importantly, database transaction logs and paging.
And just for context, I put a win2008 server OS on it when testing, the machine booted from powered off state to desktop in about 6 seconds. For nerds like me, it's enough to draw that sh#$ eating grin on your face. It really is incredibly fast.