Some great info but also some iffy "facts" and personal (flawed ?) opinions
I would suggest that anyone looking into this issue does so with an open mind
My own research and experience has taught me that combining an enterprise RAID card with desktop drives will at one point cause issues (unless you change that drive to match the parameters the RAID card is expecting)
They have been designed with diffrent intended uses.
Be pragmatic about the issue, separate out what should in the ideal world, or what was intended when RAID was invented, to how the tech functions now.