difuzion :
I've come to the conclusion of getting a regular WD Blue 500GB SSD. Are you saying it's of no benefit on my build? And my question was people are saying it's hard to get the SSD to be the boot drive on the h81m-k. Is this true? Will it be difficult to merge my HDD onto my SSD and get it to become the boot drive?
For a board of that age, a regular SATA III SSD is just fine. You'll not notice the difference vs an NVMe drive.
The WD Blue is a good choice.
Crucial MX500 or Samsung 860 EVO are also good choices.
To use that WD Blue SATA SSD as the boot drive, the difference is the m.2 connection or the regular SATA connection.
On your board, the m.2 is problematic. Unknown if your board can actually boot from that port, if it even exists.
And again, there is no performance difference over a SATA III 2.5" WD Blue.